@ZorokiHanuke You mean that Rappy mini suits? Maybe, but not by much, as I've had no issue with them speed wise. I only ever saw a video of speed hacks, uploaded by another player in a forum thread here, and that was to ask if anyone else had to deal with cheating in PVP.
As a bad super casual normie, I don't need any speed boosts myself, BUT if being short does give an unfair advantage, that would make me feel different about a height restriction, if only for that. Again, IF this is true and it affects the game. If the boost is neglible, I don't see any reason to restrict though.
I remember Tera's elin animations argument, where min maxers claimed they found that for some classes, elin animations were faster and more efficient. It was at most some milliseconds, but we know how extreme min maxers can be with details.