I was hoping for some "FM X" or "Absynth X" - mostly in terms of GUI, but also some extra modern features. For instance Ableton Operator is an FM synth which still benefits a lot from added analog-modeled filters. FM8 could get them as well.Synths like Absynth and FM8 can absolutely be regarded as being "done" - but on another hand, both synths carry such amazing possibilities that you could make them into some serious flagships
Overall, there have been many great synths in terms of sound or feature set, but only since Serum developers know how a proper GUI should look like.
