I recently answered a similar question about wiki staff here. My answer overall hasn't really changed, though now there are technically open spots for wiki staff. However, the problem is that I'm not really seeing a need for them. For example: none of our chat mods (even our former one who's now an admin) are active, but I never see chat being used on here. Similarly, our rollbacks aren't as active either, but we've been pretty well-off in managing vandalism.
Thanks, though; I really appreciate you putting yourself out there and showing me your willingness to take on extra tasks. :) Wish there was at least 10 more of you active here on this wiki. That said, right now we need active community members more than we need staff. After that, the need may one day come to do some appointing.
If you're looking for more to do, you can check out a couple of things I've listed on the community portal. They're a bit generalized, but if you have questions, you're welcome to ask me about them.