Cycling Env sync'ed to bpm would be great and make it easy to get rhythmic interactions with the lfo.
The trouble is if you have a lfo per voice you would then need a cycling env per voice to keep those interactions
TBH I kind of like the way it is now, syncing the lfo and then experimenting with the cycling env times till you get something funky, a case of Sync Off Ears On,
it results in timings and interactions that are more alive and interesting than just syncing everything up, though it would be nice to have that option.