I have been feeling this for a little while and I was talking to a fellow Tremblayan (who shall remain nameless) about how annoying it's getting having unnecessary threads being stuck at the top.
I try to keep the stickies to a minimum and then de-sticky em when I think most people have seen them. On this section, that usually means around 24 hours. Like my message will be de-stickied early this evening. I also increased the number of messages per thread so people could see more new messages, since sometimes you have to get to page two or three to see the end of the new stuff.
As people keep spreading out, I think we'll be able to put more and more system announcements and stuff in what is now the Welcome New Users forum, but will also become an announcements section soon enough.
I definitely see your point though.
BTW, I know a lot of us got used to the "list 100 threads per page" feature on IMDb (I did anyway). I can't swing that right now here without slowing the forum system down. As we grow, we'll probably end up on our own server and that opens up new opportunities.