(sorry for my english)
I agree with this idea…we have to keep in mind that perfect instant chords aren’t very easy to play so @brad 
will be capable to let us to configure in the binding window a kind of latency between all the chords notes ON event to trigger the entire chord.
An example could be a grissed chords with two hands.
This is just a remark 
Oh! If i can say, this feature could let us to choose what the “chord” is made of: not only notes but a group of note + pedal + other events all played together.
At this point i can say that the feature could be extended to let us to group multiple source to the same target:
an example would be to be able to swich to next song state through multiple notes even if played independently.
In this way we don’t have to duplicate ‘n’ times a binding to use the same target but use a kind of “source grouping”
What do you think about?
Bye!