Oh could you please get on topic, you weren't even there when pacbrad was there. Just like me. You know what happened to the jetpack suggestion. Packedbread is way better than pacbrad.
But yeah, this looks like a nice suggestion, cant be hard to make.
W is used for gravity, D opens debug mode, saying that you can't add more stickman controls because there aren't enough hot keys isn't a good argument, just make Q rotate aim left and E rotate aim right, it doesn't matter if those keys are already used. The only thing I don't like about this suggestion is that it might break stickman controllers if not properly implemented.