It would be cool to have the manual built into the H90 control software so you can hover over parameters and see the description or something similar

Also it would be cool to see a few more routing options: being able to set mono/stereo regardless of connected cables and I think it could be cool to have the algorithms run in series with a dry bypass that goes around both of them (maybe even with a dry/wet control) so you can have one algorithm effect only the wet output of the previous algorithm

A real wishlist item would be EQ in the global settings for each algorithm so you can have EQ control over everything