These were earlier comments:
1. Loop the pattern to the longest track's settings. Say I have two tracks, one has 10 steps, the other has 15. Loop to the one that has 15 steps versus 10.
2. An envelope editor that allows for extremely short sounds - could make clicks/pops/etc.
3. A way to edit the theme by hand (maybe exists already?)
4. Track polyphony, instead of using multiple channels (this one is probably hard).
5. Sample Import with Granular effects / reverb / delay
6. Deleting notes does not shift the pattern up.
This is the type of music I'm currently making with Renoise alone - no plugins until the mastering stage: https://ab-nnn.bandcamp.com/album/faces-fragments, I'm looking into other means to keep the tracker composition style, and I really like the way Oxide looks/feels. Very similar, but with possibly more potential due to less folks pestering 'ya for changes :D