Bristol_Jonesey
We had a song a couple of years ago which just felt wrong, tempo-wise.
So I slowed it down a bit and everyone who heard it said wow! what have you done to it?

It doesn't take much.   I was rehearsing a new arrangement last night of the 70's pop tune Midnight at the Oasis set for big band.  The singer was looking for a bright tempo in a funky style.  The band just couldn't make the groove work at that speed.  I really would have liked to have done it that way, but it really has to be tight to make that work.  We took about 10 BPM off the tempo and it fell right into the comfort zone of the band.  That 10 BPM makes the difference between a really nice groove and a train wreck.  I am hoping that after they have played this a few times, we can get back closer to the original intention and still keep the faster groove.  The impact will be a lot higher if the band can cook at that tempo.

I know this is off topic. But the best way to get any band to play something well at tempo is to slow the music right down and I mean right down. eg suppose you want to end up at 130 BPM.  Start down at 80 BPM. You will see how bad the musicians actually play the music at such a slow tempo.  If they cannot nail it perfectly down there there is no hope for them at 130 BPM.
 
Rehearse at that tempo for a while and gradually take it up. Work at 90 BPM next and 100 BPM etc. It is very challenging for all the players to play everything so slow. Eventually they get it and it starts to sound good at the slower tempos. Then it's time to go up a step.
 
If you do that by the time it gets back to 130 BPM it will sound great. It won't happen overnight but it will happen!

MakeShift
I still learn something new every day with this software.  Craig, I didn't even know you could do time stretching this way while holding the ctrl key down and dragging by the top corner on the end of the song.  Very cool.  Much easier than how I was doing this in the past.

+1
This works like a charm on a single stereo track! Is there a way to do this in multi-track mode?

So...here's how the song I was working on resolved itself.
 
Ultimately I split the choruses and verses, and sped up the verses by 2% but left the choruses unaltered. What I find interesting is that when I play the entire song, it doesn't sound like the tempo changes at all. When I post the tune on YouTube in a day or two, I'll put a link here so you can tell me whether I'm crazy or not.