Rather than building a culture of power users. Speaking as one, that's a major win for the site.

Those of us with 500+ followers will always wield more influence than someone like you simply because we've got a head start. Any time Hubski gets mentioned on Reddit, I'm inundated with followers - you aren't.

Power users will always exist. Hell, there are power users in real life. Power users on reddit and digg were a problem because the position of their stories was visible to everyone: digg had one front page, reddit has /r/all and subreddits with one front page each. But here on hubski, your status as a "power user" doesn't affect me. I'm not following most of your followers, so even if your posts get a lot of shares from those people, I won't see it. If your post is shared by someone who I am following, then it's coming at me through a filter of someone whom I have deemed to be a good judge of worthy content. If I decide they are sharing too much from you, I can simply take them off my whitelist.

I can't conceive of a situation in which your power user status would affect what makes it through my whitelist, but in the rare case that it does, it's easier for me to blacklist a few power users I don't like, rather than attempting to blacklist all of the myriad shitposters that may be present in a "power tag".

I also don't see what's wrong with building a community around a tag - there isn't a lot of reason for me to follow #Detroit, but since people I follow follow #Detroit I get to see anything worthwhile (to me) anyway.

So tags are, at best, useless because you're already following the good posters, and at worst, will clog your feed with bad content.