I have my H9 for a few days now. My wishlist for now:

-Possibility to combine more than one algorithm. This is my main wish. Hopefully some day this is possible. I think this is one of the big shortages of the H9

-Longer delay times. I would like to have 16 seconds delay. Yes I am looper/delay freak!

-Better pitch shifter tracking for chords. The tracking for one note is good. But playing two or more notes together results in bad tracking even with the 'modern' type of harmonizer. Tracking like the new EHX Pitchfork would be amazing.

I really love the reverbs in the H9!!!