I voted yes
To improve the faster of every trades , probably a good idea...
In fact you can already do this (with off/online button) but without the window as you said "like quick send FG".
At the moment you can send a PM only with openning a new page, and that's a waste of time...
So that's the point were you are right.
Idk why it's not already possible to do such thing.
Maybe because there is already too much things to update so maybe hard to updates everything at once.