Just a passing thought. I realize this is a feature request, but I just feel like saying this.
 
On my music workstation, I leave Sonar open pretty much all the time so that I can get to work quickly when I have a spare few minutes. For this reason, 90% of the time Sonar closes is because of a crash, which occurs about twice a week. Unfortunately, the Quick Start dialog that appears when Sonar is started doesn't understand this, so the most recent project that is offered to open is actually the last project that was open THE LAST TIME SONAR CLOSED PROPERLY, which for me is rare. So in order to re-populate Quick Start correctly, I have to manually close Sonar while my current project is open, and then re-start Sonar.
 
Quick Start should understand that it is part of an application that frequently crashes, and should get populated when a project is opened, not when Sonar is closed.

I'm not sure I get 100% correct picture of the situation. Does your PC go to sleep mode, and crashes trying to wake up?
I've never gotten anything but problems using sleep mode with SONAR or any complicated application, so I've turned it off.

Assuming your sig specs are correct, you are still on Sonar X3.
 
Not sure what you want the CW devs to do about that, since it's no longer being developed.
 
The latest Sonar is vastly improved over X3, with hundreds of fixes and enhancements done in the last two years.  Many of us using Platinum aren't experiencing the frequent crashes you are, so it seems to me the ball is in your court....

Also to think its part of normal use for a crash to happen isn't right. I would find out why you have crashes. Its not normal to have them. Already the above posts have offered good ideas to look into. I would do that and spend time finding the cause. You may have a power issue if you are using a USB audio interface. 

Um, Really?
 
Sonar has regularly (every few days) crashed on me for at least a decade, spanning multiple versions and several different PCs, synths and plug-ins. I'm not about to upgrade yet again. And there are issues with Sonar that go back to the 90's that have never been fixed. I faithfully look at the What's New for each version, and what I invariably see is more and more and more bells and whistles but scant attention paid to the most basic usability issues. I agree that X3e is much more stable than X3a, but I've installed the Platinum trial, and there just isn't reason enough to upgrade and also switch to their subscription model. Add to that their passive-aggressive support policy ("We're here for you -- uh, that is between 10am and 3pm Pacific time, so you have to take a day off work if you want to talk to us")
 
Honestly, I'm waiting for a version that is announced with "We've added NO new functionality! We spent the last six months fixing everything that's already in there." THAT I will buy.

jkoseattle
...
Honestly, I'm waiting for a version that is announced with "We've added NO new functionality! We spent the last six months fixing everything that's already in there." THAT I will buy.

Has never happened with any version of any DAW software.  Ever.
 
They're all running a business, so it's disingenuous to think it could ever happen.  The best any software company can hope to do is fix as many issues that are widespread (the DEAL-BREAKERS), while adding new features.  I think CW has done a great job on this, particularly in the past two years. 
 
All that being said, I'm not entirely convinced your issues are due to Sonar per se.  X3 was solid for me -- yes, I still had the occasional crash, but nothing regular or like what you're describing.  Have you reached out on the forum to try and troubleshoot these issues?

I can't remember the last time Platinum crashed on me, and I use it pretty much every day, often for several hours at a time. At one point when I was having regular crashes, they stopped after I switched to a different audio interface with different drivers.
 
If you're getting lots of crashes and you've been getting them consistently, you need to look beyond SONAR. The last update for the Delta 1010 (presumably the Delta you're using) was in 2012. If you've done any Windows 7 updates, who knows how it's interacting with those drivers.
 
There have also been documented issues with E-W Play and older operating systems. Remember, Windows 7 was released over 6 years ago. I know a lot of people continue to use Windows 7 because it was stable and reliable. But that doesn't mean it will always be stable as the world around it changes. 
 
As to the Quick Start remembering a project you've opened, SONAR doesn't know a project is the most "recent" one unless you save it to update the project's time stamp. Think about it - if you haven't updated the time stamp and the computer crashes, how will SONAR know it was the most recent project?

By recording (registry, which is where it's recorded anyway, numerically) when a project was *opened*, not when it was saved - that date then defines the most recent project.  That's a change to now, but a very logical one.

Perhaps a workaround could be to add a step to your workflow where you save each project just after you load the project.  That way the just loaded project becomes the current project.
 
How often do your projects save automatically?  My daw, Music Creator 6, automatically saves the project I'm working on every ten minutes.  You may find your projects are saved but you're not aware ofit.

KPerry
By recording (registry, which is where it's recorded anyway, numerically) when a project was *opened*, not when it was saved - that date then defines the most recent project.  That's a change to now, but a very logical one.

Is this something SONAR can do, or does it have to tell Windows? Seems it sometimes complications occur when SONAR tries to circumvent something where Windows has specific rules. Remember I don't know anything about code, though...maybe this is something where SONAR would have to cordon off part of the registry to store opened projects instead of just saved ones, and tell the Start Screen to always look if an opened project has a newer date than a saved one?
 
Although I just thought of something...I would hate for the Start Screen to do that, because for every project I open, I probably only save 1 in 10 anyway. A lot of times I open a project to try out a plug-in, test something to respond to a forum query, audition a microphone, etc. My Start Screen would be cluttered with a lot of useless entries. So I'd want a preference to specify whether SONAR considered most recently opened or most recently saved to be the Start Screen's priority.
 
At that point, my temptation is just to say "screw it" - I don't have problems with crashing anyway, so SONAR remembers what I was working on (as soon as I create a "keeper" project, I save it).