Wow, Jenni, I think you raise a lot of issues and questions. I really don't see this forum being well equipped to address everything you mentioned in one fell swoop.
First of all, I don't see the demographics of this forum being very homogeneous. Members here are an aggregate of many people on the "TG" spectrum, and are here for a variety of reasons, and are often in vastly different circumstances. We have everything from post op TS ladies to kids spoofing for fun and other trolls. (don't believe me? I got a bridge I can sell you) This is social media. It is going to self organize to a large degree.
I do see some of the topics that you mention from time to time, some with well thought out answers, but just as often poorly tthought out wishful thinking and out and out delusional responses. There are separate areas for interests and topics of greater interest to certain segments.
And yes there are taboo topics that greatly dissapoint me. Religion for one. I get that we really don't want flame wars and I have no interest in starting one, but for many here religion is a hugely important topic. Especially to those who may have a serious issue reconciling past hurts or have been disaffected.
Anyway the forum, as I see it, generally follows what the members want it to be. If you are keen on improving the content, my question for you is what are YOU going to do about it? 430 posts since 2006 doesn't seem like you are contributing to the change you want.
