The ToS doesn't even allow ventrilo, skype or a graphics driver. Voice chat obviously gives you an advantage over other players and the graphics driver alters the games code in memory to optimize it for your GPU :P
Couldn't care less about people using some autofire gamepad or programmable keyboard to automate crafting. The ToS isn't precise enough if you ask me and the real problems are RMT and people using hacks (I'm not gonna call them hackers, since the ain't). Would be nice if SE started banning those.