Chat defaults to ally chat

[Twilice]

It's rather annoying that the chat is defaulted to allies since every player is an enemy, and it seems most players don't realize that their message can't be seen. Often there won't be any chatting unless you explicitly tell them they have to write in all chat for it to be shown.

[WindStrike]

That is DOTA's default, unless they add an option for that in the actual game options, that's not getting fixed. Shortcut to chat-all is shift+enter, I believe.

[Crooked]

Noya managed to overwrite space functionality (opens up tower interface) and in earlier version of ETD middle mouse click (removed since some people use it for camera drag). It might be possible seeing how Noya implemented custom keybinds in different areas.

I think overwriting keybinds is possible but changing the behavior of an existing keybind might be not. (Not everyone binds chat to enter. But I think 99%+ of the Dota 2 community use enter to chat.)