rlared
I'd like to see fixes and refinement to the existing features. ...  Stability improvements would be great.

That is also what I would pay for!

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I purchased Sonar because it was well packed with features and great plugins, including some excellent 3rd party plugins and instruments. I'm not going to pay for some minor adjustments, like a new button, new screensets or similar features.

mister happy
I would pay $299.97 to upgrade my Platinum Lifetime if ProChannel disappeared, the inspector panel vanished, and the phase and stereo interleave buttons reappeared on the track headers where they belong.
 
I'd give another $100, or so, if a new Theme Editor could edit the stuff it can't.
 
Maybe more.
 
 

You don't like the Pro Channel?
 
Don't use it then. Nobody forces you to.

Duplicate 

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I would like to see first all annoying bugs and workflow slow down fixed before I would think about investing again in Sonar.
 
Well I suppose our Life time licenses means now nothing... Anyway because of what happened to secure alternative I invested in S1 so don't feel under pressure anymore. 
 
If all annoying and frustrating bugs are fixed and new versions are introducing some really game changer feature I will consider further investment in Sonar for sure.
Just like with every buy which help to improve workflow...
 
But I don't really want to pay more for something what should already be done.
 
Too many unfinished things, just like unfamous lack of very simple thing like ripple button... Simple to implement as functionality already exists.

I guess I'm a little more forgiving of workflow bugs. There's a hundred different ways to approach a project and Sonar covers a lot of different scenarios quite well. I would like to see a few Gui enhancements - but they're minor annoyances like the transposition slider on the track inspector. Very hard to move discrete steps and get back to zero. Copy the Velocity offset slider for midi tracks to the track inspector. Smaller MSR buttons. Fix the  aux send panners to visually track with the channel pan control when they're linked. Maybe an improved method of populating the console view to mirror the track view.
 
I'd be glad to pay for an upgrade to Platinum from Professional. but I would like to choose which functions and media to upgrade.
 
Great that Cakewalk / Sonar has been bought from Gibson.

I'd have to wait and see.
I bought Studio 1 after the "big announcement" and have been using it since (I figured it was only a matter of time until the servers went down") and I have to say it does a lot of things better than SONAR. I can get latency down to where I can record guitar with amp sims (could never get that low with SONAR) and the arrangement view is amazing. Plus the "Project" feature is a winner.
Having said all that, I still would rather use SONAR, to me it's more intuitive and.....it just looks better. More elegant. And it's what I used for almost 15 years, so yeah, I have a little loyalty? attachment? 
I'm glad to see SONAR isn't dead and I hope the folks at BandLab give me a reason to keep using it.

I would pay for an upgraded, more stable, VST3 version of Pentagon I.
 
I would also pay for a 64 bit version of Project 5.