Seems people are enjoying what the club does. It's not their fault they can't play in O2 Arena by now (problem with Slavia Prague) and some other things like logo and jerseys... tastes are different.
Not only, if there is any. Sparta and Lev has the same ownership, home arena of Sparta is Tipsport for decades. O2Arena is reportedly expensive.. so why to play at O2 (and train in Tipsport, even Slavia trains in its old rink-Eden) and pay a lot of money for it, if you have good enough (NOW, not in near future) arena?
Logo isn't good too. Lev have awful jersey, not good logo, very old arena and bad broadcasting, but good roster. Like russian club, not european.
And you basically described an average European club. I mean, I'm well aware of the notion of using "European" as a byword for quality and innovation myself. But hockey is like one of those cases where it's rather hard to apply.
Good thing is that Lev is more marketing savvy than Sibir or Yugra. You shouldn't ask too much.