If you want to know what females look for in a man, go directly to the source: look for the games/books they create and take notes. Those are the stereotypes they go for, in spite of what gymbros and incels may fantasize about to cope with IRL rejection.
They are made by females for females, and they aim to make money, too, so they are the safest bet. They are catering to them and being successful, which proves those male LIs work!
Now, if you ask what I, a gay man, would find attractive in a game, I'd go for a character that doesn't sound too retarded, which is one of the hardest things in an eroge. Make him consistent, work on his characterization, put yourself in his shoes and act rationally according to the values you decided to give him in the first place.
And please, please, make him look average or conventionally attractive, at least, because I couldn't take yet another bear-filled game
