I didn't vote as I didn't see a response that reflects my view point.
I visit the Media Center section daily to see what kind of cool stuff people have come up with for my BlackBerry (or even other models).
I enjoy seeing the creativity of the members here. If I like something, I comment, if I don't then I just click the back button and go to the next thread of interest. If I like something and want to pay for it, then, I go get it and comment on what I liked about it.
Ninety-nine percent of the content on my BB was obtained free of charge or was pre-installed so I don't mind occasionally paying for things. Having gotten stalled out just attempting to download the necessary software for building a theme, I have decided I can appreciate the work people put into it, either through paying the asking price if I feel it's something I want, lavishing praise on them if it's free, or letting it go if it's not something I want to pay for.
As for the so-called troublemakers, as a mod elsewhere, I have great respect for the mods here and their ability to deal with folks who can't follow the rules. No need for me to tell them how to do their job.
Either way, if someone's behavior is obnoxious, disruptive, creates clutter or otherwise breaks the rules -- be it a regular member or theme builder -- then I would imagine the mods would deal with it accordingly on a case by case basis. The other options seem a bit extreme and rigid if you ask me.
In any case, I still want to see people's themes, and if you want my money then I'll decide if I want to spend it. That's the option I want.