Please add the ability to change the wave shape for any effect that uses an LFO (tremolo, chorus, phaser, flanger, vibe etc) to allow Sine, Triangle, Saw and Square waves. In addition to this it would be awesome, and a great help in getting good univibe tones, to include a symmetry control for the wave form like my Roger Mayer Voodoo Vibe +.
This should presumably be a pretty simple addition which would provide massive flexibility and creative possibilities without the need to introduce completely new effects types.