Most sites only allow one thread so the fact that we allow two is being fairly lenient, not to mention accommodating. Really, all you need is one and then to bump it when you are actively seeking an RP. To help make yourself more searchable you can do one of two things:
1) place a link to your request thread in your signature
2) post your RPs on the forums rather than your PMs
As for the PM limit? First off, it is temporary. Second off, it is currently necessary. If you followed along with the announcements, you'd know that the reason it had to be instated at all was to help with the processing load on our current server. The load was causing to much stress and thus increasing the glitches that occurred on site. As it is, we are still having glitches, but the cap helped to alleviate that to an extent. And, once more, it is TEMPORARY until we co-locate.