My custom MIDI controller

My custom MIDI controller

here is my controller what else should i put on it im not sure atm.
This is an expensive project and i wana get it write.
This is only a basic render this is the 1st time i have done 3d modeling.

Guacamole. 100%.

Looks nice. What are the things below the two blue buttons?

they are encoders

More knobs for effects/filter?