So just a very simple idea here, essentially as much as I love this game and almost every aspect of it I do get frustrated with a couple of aspects of the controls so here's what the game could benefit from:

- Hotkeys for weapon slots; we have them for potions but they're NEEDED for weapon slots, its so insanely frustrating when you have 4 weapons and you're cornered by 8 shock knights going "OMG WHERE'S MY SWORD" and waving bombs in their faces stupidly, some people may be very precise with mousewheel and next/previous weapon buttons, but there's a lot of us out there who enjoy the definite precision that comes with hotkeys; the F-keys are all available here.

- Toggle mode for drop/use; it would be very nifty if I could hit right shift to toggle drop mode and then press my potion hotkey instead of having to click and drag my heal potion (risking accidental use) to drop on the ground for my friend who just joined my run.

- Push-to-talk option, the other day I heard a girl arguing with her mother: "Don't you think I know where you're going when you sneak out after I've gone to bed, I wasn't born yesterday and let me tell you, you're NOT READY FOR AN ACCIDENTAL PREGNANCY YOUNG LADY!!" as amusing as this was to listen to I do believe it illustrates WHY some players choose Push-to-talk when the option is available.

- Autorun; this game is already quite accessible to one-handed players, though click to move players are at a disadvantage when trying to use guns; this might even the playing field.

- Toggle shield

- Improved chat bar UI:
- Mousewheel functionality
- Arrow keys/pgup/pgdwn

These are all fairly simple UI additions that can really make the difference in a game's polished feel and thereby make it a more attractive long term prospect.

PS: I don't know if joypad/game controller options are there but if they're not they should be, it never hurts to make the game more accessible

PPS: Is there a colorblind mode?