yeah Harem can be good, if you find a way to give each person in it, a solid distinct personality, and a good reason to be with the MC.
levelling through lust is pretty good at it. (smut novel)
but something like Mages are too OP.
that is just harem for the sake of adding girls. some of the girls fit, but some change character so they can join. 1 girl has like 4 scenes in the entire novel, and she got to join the harem. another girl had an entire plotline about becoming queen, many chapters dedicated to her achieving this goal MC helps and gets rewarded. then she joins the harem, fine she was mainly using it for sex anyway. (that's the vibe I got)
end of the novel she just leaves the throne and leaves with the MC. (It was explained that the author had only planned till halfway though and when he ran out he made stuff up, other plot stuff is really good still, relationship stuff got really bad.)
