FabFilter should update Pro-G to include a feature inspired in Wilkinson Audio DeBleeder and Slate's brand new gate (and its debleed section). A release programmed to last longer in a selected range kicking in after a user defined period, i.e.: cutting cymbal bleed but letting the note ring.
I know it can be done in Pro-MB, I've done it. But it's not a gate, it's not designed to be one. The drum hit is somewhat dulled even with huge lookahead and the fastest attack time.
Slate's design is flawed for lack of lookahead, external sidechain, etc.
That's one update I'd certainly buy. : )