I started using a wacom tablet extensively at work for Maya recently, mostly to paint properties on geometry with smooth value inputs.
This isn’t something i’ve MISSED, but it’d definitely be nice to paint channel effect parameters. By paint i mean dragging from line x to line z, and having renoise assign parameters to the selected cells based on the stylus pressure and whatever “color”/parameter you’ve set stylus pressure to paint.
In addition, the stylus could double as an “analog controller” of sorts, assignable much like midiCC…
Just throwing this out there 
- A