Please allow 2 modifiers to hotkeys

There are certain bindings that would really make it easier for me to enjoy the game. Namely, being able to hold (shift+control)+(any button).. Ideally, all the modifiers together would make sense..

It could be easy to display in the UI if instead of having the icon say "shift+etc" it could just say {S} for shift, {SA} for Shift Alt, {SCA} Shift+Ctrl+Alt

So like, Shift+Ctrl+E would display as {SC}E


A bit about my particular case

I enjoy playing with controller, namely the steam controller.. Because of the right pad mouse, I prefer to control movement & aiming independently.

This leaves me with 6 buttons that I can press while moving & aiming.

If I was able to use shift+control+button, then it would be easy to map out all the bindings I need simply using a combination of grips + triggers. For instance on grips, I have Ctrl and Shift. On triggers, I have LMB & RMB, but if I press both it hits MMB.

Then, my abilities could be
1) lmb
2) mmb
3) rmb
4) sh+lmb
5) sh+mmb
6) sh+rmb
7) ctrl+lmb
8) ctrl+mmb
9) ctrl+rmb
10) sh+ctrl+lmb
11) sh+ctrl+mmb
12) sh+ctrl+ rmb

While this isn't the total of 13, its close enough for me.

It seems like the current binding system is a bit funky to be honest. Why, for example, can I bind ALT+SHIFT as a hotkey? I know you can bind certain things as Shift or Alt, Ctrl, but who uses ALT+SHIFT or CTRL+SHIFT as a hotkey?

Thanks so much for considering this feedback. Have a good one.