My list would be:
Midi
Reverb behind the FX-Loop(!!!)
CabClone
FX-Switch should turn the send of or on, not the return
EQ-LED should be BiColor just like the Expresses have (yellow=fader, orange=preset)
Switchable Loudspeaker-Outs like in the Roadking (Clean=Speaker A / Lead=Speaker B), maybe...