Forgive me if this has been suggested already.
I'm hoping this is already being done by the props but I would like to see the next synth in the line of Radical instruments.
The version I would most like would be 'Radical Strings'. The sound of real strings mixed with all the flexibility of sculpting my own sound.
Radical piano is still on my to buy list when I have some money but this instrument would be well suited as part of a series.
If anyone else has any suggestions on what instruments they would like to see as part of the Radical series then just add it in the comments