nobody said to not use the mouse. the mouse is still the main input, but if you just don't use your second hand, you obviously will always be slower.
also, some poeple like me like it much more to play with both hands because it relieves the mouse hand a lot.
once learned, it's much easier to play with hotkeys. it's a little bit like ten-finger-typing: you can just blindly type and everythings goes it's right way. compared to that, only mouse is like two-finger-search-typing
anyways, (mega)glest doesn't support real unit-hotkeys so far. the only ones that i know are (a)ttack and (s)top. are there alreay others?
maybe that is something that could also be included after the merge. like a optional hotkey entry for every command and every unit.
will come back to that.