1. I'm actually not sure if I've been given a BJ or not in the technical sense (not always so sure what exactly my partner at the time is doing while at it), but I do tend to enjoy being given oral far more now compared to before T.
2. I have no idea, cause I haven't tried. But I don't think I'd be very successful with that, as I only got about 1 inch of growth (after 4 years on T now I don't think it'll grow bigger than that, but I'm fine with its current size) and I'm not very... lithe. I've only had sex with one person with a vag and we didn't try that particular thing out, although I can imagine he'd probably have liked that. I've heard/read it's even more difficult to manage penetrating someone anally with my kind of size, so I've not even bothered trying. I've never been all that into the idea of me being the one penetrating during sex anyway, although I don't have an version to that idea either.
3. I can still get multiple orgasms, but they're difficult for me to achieve and basically require a very patient and loving partner doing the exact right things and continuing for quite a while and of course for my mood to be right as well. And I'm very rarely in such a loving relationship as they don't last. Since starting T 4 years ago I've only gotten to that peak 2-3 times in total. Usually I can just get 1 strong-ish orgasm that lingers for a little while (about 10-20 seconds I'd guesstimate) but it also has a very long build-up time (3-5 minutes) that is just as nice really. Before T I almost always got very strong multiple orgasms, and orgasming in general has always been very easy for me, so maybe that's why I managed to retain some of that.
Faith: unfortunately I do lose interest shortly after orgasm, which I didn't use to, so at least in my case what you wrote applies. It has affected my partners but I've tried to work with the issue by being affectionate in other ways instead, like with words, looks and such. And talking to them about that with them to try to communicate why I feel that way and that it doesn't mean I don't care. But yeah that's not been easy.
4. If I've trimmed the forest around there significantly, then yes I can see it in the mirror, but it's not obvious. Mostly I can just see the last half an inch and the rest is covered in mons fat or something I'm not even sure what. Fatty tissue right above it rather than the labia. It feels a lot more like the "real deal" when I'm not involving a mirror, but just looking at it directly.
Viktor: I don't even know how I could handle multiple orgasms before T, especially when they got so strong I was a split second away from blacking out after 11 super intense ones lasting more than hour in total, and I wasn't even close to climax. I had to stop out of safety reasons cause very fast heartbeat and shallow breathing plus unable to see is probably not healthy to keep up with. In hindsight I'm guessing I didn't get enough oxygen, but I can't know for sure. I'm actually glad that isn't a regular thing for me, I'd be scaring my partners if not else then.