One thing I would find very very handy is if one was able to process the signal you send to a destination with a simple eq and also comp/exp.
There are tons of uses for this, for example if you have a shared reverb bus that is receiving from multiple sends and where, lets say the kick overpowers the reverb signal with bass. If you could just roll off some lows in the signal sent to the reverb, you would not need to create an extra utility track for that.
Pre-EQing a send (either on the way to the send by using an extraprepared alias of the signal or by simply putting an EQ before the FX on FX channel or whatever method you can imagine) is everyday business. If it causes problems use something else. Sometimes the problems might even sound great
What the request is after is to make that kind of process easier, more flexible simply.