I have nothing wrong with people wanting to express how they feel. A trans person doesn't affect me, or require me to do anything different in my life. Gay rights and respect for transsexual/transgender people should be a non-issue.
However, here is what I have observed, how I feel and what I'm concerned with:
I think the transgender side of things should be separated from the LGB movement. As cliche as it is, I'd be rich if I had $0.10 every time I've heard "What I identify as has nothing to do with my sexual orientation" when a trans person is mistakenly classed as gay.
They are definitely following in the success of the LGB movement and its causing clouded judgement. I'm not saying trans people shouldn't be treated with respect and have the rights of everyone else. However, I have noticed in Australia that people are rethinking their stance on gay marriage because the trans movement is paving the way for other sexual deviancy to become acceptable or immune from criticism, simply because they are banding under the same 'flag' which traditionally was centered around acceptance of sexual orientation.
Of course a lot of phillia's, disorders, and fetishes while weird to the general population are quite harmless, whereas there are some practices which are currently considered abuse. And providing blanket laws governing the usage of the terms gender and orientation will only strengthen claims of discrimination against these groups. Even Harvard medical claims that pedophilia is a sexual orientation and treatment is unlikely to change this.
And a lot of people are overlooking the fact that transgender behavior is a mental health issue. And if all it takes is enough people to come out of the woodwork to change a disorder into a dysphoria, then these concerns may not be as far-fetched as some would like to assume. I think we need to throw political correctness in the bin and focus on the real issues facing our world.