have you got an FM section yet?

How many LFOs?

Ability to modulate the FM with an LFO would be nice

Wave shaper

Phase adjustment on the waveform

ring mod+delay as a send FX within the synth

pitch mod waveform (to create kick drums etc)

Nice one, id love to get a copy when you finish. :clap: Are you using synthedit? I just started it myself - my synths are bloody awful, but im getting better...