My current freetime project rogue is stabilizing. I converted the grid based UI into something more classical. The top bar copies a Minimoog style division and the lower level features tabs for common settings, envelopes, lfos, the modulation matrix and effects.
I am not yet very happy with the colours of the GUI, but the division makes IMHO more sense than a grid. Waldorf Largo uses a similar layout but with different knob sizes and lots of eye candy.
Featurewise osc sync and global lfo usage are still missing. Most of the other pieces are already there.
See the project page for usage instructions https://github.com/timowest/rogue/blob/master/README.md