I wouldn't want to hear minimal all night at a club just as much as I wouldn't want to hear any other genre all night at a club.
That said i don't feel minimal is good peak time music. Good for the start of the night, great for the end, but when my blood is pumping and i'm warmed up and ready to throw down I want a bit more than bleep bloop whirrrrr
A good sound system is totally critical. Michael Mayer had me bopping about like a robot with epilepsy last i saw him. Matthew Dear also blew my mind. Both played on one of the best sound systems I've heard recently in New York and i really think that made a HUGE difference.
One thing I've noticed about minimal though it is in line to the increasing age (at least in the states) of techno consumers. It's less abrasive, lacking some of the raw energy. I feel like it may be a further alienation from the youth the music needs to endear in order to survive and flourish in the future. But maybe that's my skewed Stateside view talking.