I would add that for me, it seems like that "need for speed" soon became much less important once I saw just what it's capable of and got used to it. Then the realization of what that kind of play is doing to the battery range set in. And speaking for myself and my priorities, the game of seeing just how efficiently the bike can be ridden started up. That's a game I've been playing for 4 years now, and never seems to get old.
That said, I'm a major proponent of the KT controller conversions, which work well no matter what end of the spectrum (fast or slow) you enjoy most. Kinda like the nicest computer around feels like junk unless you have a good keyboard (control interface)....
Noteworthy - Both of the bikes I ride most frequently are powered by motors rated at well over 1000 watts, and neither has seen anything over about 15mph (unless going down hill) on any kind of regular basis. The reason for the big motors is I like the arm stretching power for crossing streets and climbing hills.... That's me though. -Al