I have seen some people suggesting this already, so this post is basically a support for that idea.
It would be really useful if there was a noise gate model that used the guitar input as a trigger, and not the actual (and already noisy) output of the preceding block.
For example:
I put a noise gate after a high gain section (any high gain section, or a block of those), but the gate actually "listens" to my clean guitar signal from the input when deciding when to open. The clean signal is not actually present in the chain, it's just a trigger.
It's actually a common way of using gate pedals (Boss N2-2, TC Sentry, Decimator G string, ...these all have the feature of using fx in a loop, while taking the detector input form the clean instrument). It's much clenaer and more precise gating that using a gate in series after the high gain section.
I'd be delighted to see this feature in a future HX update.