As requested.
DirectInput-only controllers are already getting rarer and rarer. Plus, this branch makes all controllers faster & simpler to rebind. I'd even argue these get in the way, because you can't just immediately bind a DInput controller from boot-up, you have to unbind everything first.
I'm not against a new code path for DInput defaults that tries to guess what kind of controller you have, but I don't care about it myself.
The main benefit of this is to remove the requirement of going to the gamepad menu for binding analog sticks, and going to a keybinds menu for binding literally everything else; now it's all bound in the same location.
This also means that axes can both register as a digital button press, and be used as an analog value for movement separately. Before, using analog movement would not register BT_FORWARD, BT_BACK, etc
