Very interesting topic, Andra. I'm glad you posted it.
Personally, I think you're right, that there is an "assimilationist" character to a lot of transsexual (less so for transgender) ideology. The problem is when you begin to change YOURSELF to fit in to popular ideas of what your target sex should be like. Some people really overdo it, totally abandoning old interests in favor of new, "gender-appropriate" interests.
At the same time, we
do live in the real world, in a real social context, and it's pragmatic to conform. I don't think there's any shame in assimilating, given the very real dangers of sticking out as "incorrect." Until the transgender community has a major celebration of our own besides a Day of Remembrance for our Dead (which probably won't happen in the
near future, unfortunately), I'm afraid I come down on the assimilationist side. That is to say, there are no male aspects of my life that I've given up, but sticking out too much is an
individual danger, unless we start roaming around in gangs. >

I should note that professionally and with friends, I am pretty open (kind of unavoidable since I'm a gender/sexuality person in my MA program). But who wants to wear their trans-ness on their sleeve walking down the street? I don't see any other solution but to assimilate in public.
Lia