Love the concept.
What turns me on in porn scenes is seeing a genuine connection between the two "actors", and that can start before filming. Some studios do a version of this (Cocky Boys) but instead of an interview I'd want to see them interacting/talking with each other; kind of like watching two guys at a bar meeting and hooking up. Then watching as they explore each other and undress each other. I want to hear them talk; lots of kissing. The sex needs to be real and not formulaic, by which I guess I mean the guys need to be versatile. There needs to be a lot of talking "your cock is so beautiful", "I can't wait to feel you inside me", "you are so handsome", etc. Show pre-cum, show sweating, show embracing, show passion. Then when it's time one needs to cum inside the other and be vocal about it; the other needs to cum in the other's mouth or have them eat the cum. Finally, there needs to be post-ejaculation dialogue and "cuddling". Basically romantic porn.
The other type of theme I think is erotic is watching a truly, real-life bi-curious guy (not a G4P actor or gay porn model) be guided by another in exploring his sexuality. Allow the scene to progress naturally with conversation before, during and after where the one "coaches" the bi-curious guy, acknowledging his hesitation and encouraging him through it. The sex scene should be as if we are spying on them. When the bi-curious guy cums the other should cup the guy's balls and say something like, "Wow, that's so beautiful. You're cock is amazing." Then, after, there should be the two of them talking about the experience and discuss how the bi-curious guy is feeling. Another take on the same theme would be an experienced guy coaching two younger, inexperienced guys through exploring their sexuality and bodies.
Overdone themes: "Massage turns into sex", "doctors office exam", "fake sports players", "father/stepson", where a well known gay porn actor is "hit on" by a guy, complains first and then gives in. Others I can't think of right now.
Just a couple of ideas.