Sample drawing, MilkyTracker-style, would be a huge improvement, in my opinion.
Also, in View->Setup->Colors, colours can be changed for the pattern editor, and a few other things, but there's still a lot which is a fixed colour (mostly grey). It'd be great to be able to change that, too.
I know you guys work really hard on this anyway, so if you can't find the time for this, or it isn't possible, then no worries.
On that note, I'll offer my help, if you want it - I know C++.
Keep up the good work!