I'd like to request for future versions a way to program user-defined, odd time signatures.
While I understand that is that not currently possible due to the recorded files, I have noticed that it is possible with many DAWs to time stretch to user-defined time signatures.

Thanks for your consideration. Can't wait to start writing that Afro-jazz and prog space rock as well as Greek Rebetiko tunes!

Try using Realband .. I've been able to 'adapt' quite a few styles to odd times. Mostly it will truncate from a longer style, or mathematically adjust, but I have had some success this way.

Set time sig to odd-time (like 7/4) then select a style and see how it behaves. Another user (Tommy) and I were able to send seq files back and forth this way and get expected results using 7/4 ..

Result:
http://masteringmatters.com/stuff/Count_Me_Out.mp3
I think bass, rhythm guitar and keyboards were generated on this .. maybe drums too. I'd have to check.

/yep, drums generated in odd time too.
// if you want a SEQ file to tinker with, this was the source, and shows which RealTracks and RealDrums were used in 7/4.
Experiment, have some fun!

It's large, so may take a few moments to download ..
http://masteringmatters.com/stuff/chord%20changes%205b.SEQ