Hey Rancor,
Thanks for the praise, good that you like it here.
As for your suggestions, yoes we do lock off topic threads rather quickly. The reason is that we don't want to lose the focus. If we would do everything and anything regarding OFP, we wouldn't be as good as we are at what we're doing. You wouldn't be as satisfied as you obviously are at the moment.
We don't delete off topc posts because we think that locking is a less severe action and it also gives other users an idea of what is on topic and what isn't. We do, however delete illegal, highly abusive,pornographic and other similar posts.
We're careful with editing posts because that could make other members believe that someone has said something himself what was said by a moderator when he modified his posts. So we don't alter posts by general principle, except to remove illigal or other unacceptable content. And we always clearly mark the parts that were edited by us.
I hope that clears up our policy a little bit.