some concerns...
you have an expander module for a module you don't have... the alyseum hold
you have an expensive, discontinued (and almost uniobtanium) joystick which is way over specced for audio (it's avideo module - much higher specs than audio)
I'd want more vcas and mixers (probably combined into a quad cascading vca) - and more modulation...
I'd drop one of the 1u rows for an extra 3u row.... and add a simple matrix mixer...
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities