I hope I don't post too many FRs, but I LOVE MODO bass (in fact this is what I have always dreamt of my entire life, seriously) and want it to be perfect.
The idea here is to have a "fake fretless" mode which should cover about 90% of the wishes.
Works like this:
1. Same model sans the frets
2. Pitch bends go without steps in between
3. Maybe some different filtering of the string model and the noises (should be enough I think)
Doesn't need to be perfect - but having it as an option would be great.