Working on a fun REAPER branch relating to keyboard shortcuts. I will allow some pretty sweet things, but it will also give people a lot of rope to hang themselves with. You can have a bunch of alternate main keyboard mapping sections (which also affect mousewheel mappings), so you can switch sections by action/toolbar/menu/whatever.

You can also engage a section momentarily by action, so you could: make Ctrl+F be "momentarily use the main section named "FX", then that section could just have a ton of mappings to particular FX: Ctrl+F followed by E for ReaEQ, Ctrl+F followed by C for ReaComp, etc.

What's also fun is that when they are momentarily engaged, they act globally... so if you are in a text field and do Ctrl+F, then the following E or C still work, or if you have the Ctrl+F as a global hotkey, then that momentary switch makes the E or C effectively global too, but only when following the Ctrl+F.

But -- if you accidentally run an action perma-switching to a section that has no keyboard mappings... well nothing will work until you switch back via the correct action in the actions window, or you restart reaper. Which is where the rope to hang yourself is.