As it's different for all of us... I can report on myself.
Erectile dysfunction was already starting to be a part of my life, but I do think that there was an uptick (haha... oh... too soon) when I started hormones, in part because my wife and I were struggling to establish a new normal. I think that my ED was fundamentally caused by dysphoria, as I used to dissociate during sex in a way that I don't anymore. Early in transition, my wife was still engaging me as a woman sexually engages a man... kinda just lying there and expecting me to do all the work. Now, we've got a more egalitarian approach, and it's working out very well for both of us. Definitely some learning to do, for both of us... but well worth it.
Libido is down... but really... I was masturbating twice a day and hiding that from my wife, who seemed happy with having sex twice a month. We still have sex about the same amount, and I rarely feel like masturbating (and I never feel a NEED to masturbate). So for me, a lower libido is A-okay.
Men? Hmm. One one hand, this is a little complex... but on the other, it's very simple. Simple first: I'm married, so any attraction I have to people is a purely academic interest. The complex part... I've been bisexual for as long as I can remember, and I always liked butch women and femme men. Once I started seeing myself as being more feminine, the idea that butch men would be attracted to me made me more attracted to them. Weird but true!
Toys, toys, toys... if they're not already a fixture in your sex life, you might want to try to look at this as an opportunity. They're great, and straight cisgender couples love 'em too! If you want some frank discussion about that, I'm open to sharing via PM. I don't tend to go into detail in the open forum because I hate speaking in euphemism.