I have read many posts on this site that say their depression cleared up after going on hrt, or at least it got a lot less.
For me, that didn't happen, at all.
I was diagnosed with depression when I was 15 years old. I was put on anti-depressants. They don't work, well, not for me anyway. Sure they stop the lowest of the lows, but they also stopped the good high feelings too. I eventually had enough of that kind of state of mind and stopped taking them. Of course that was 28 years ago, and the meds I was on had severe withdrawal effects, that were not widely known or understood at the time. So that was one heck of a bumpy ride too.
I still suffer from severe depression, had a very bad bout yesterday, and it's still here today. I was unable to work yesterday it was so bad.
I'd say that transitioning got rid of a whole lot of problems and anxiety triggers, but replaced them with a whole host of new ones.
The only thing I can do to deal with depression is to tell my other half, so he can make sure I don't self-harm, and then I just wait until the darkness passes.
I think that's just the way I am, and it has little to do with my GD. Most of the time I just feel fundamentally incompatible with life.
I am sure I'm very much in the minority though, and hopefully you won't be like me.