I would check Golden Time off for being like any other harem, except for one key fact: the main girl is already interested in a different boy. Usually in these sorts of harem stories, all of the girls are pure and innocent and have never even seen another male before. This relationship could be different than usual.
Still, we do have more seemingly-standard additional haremettes, like a loli (in college…) and an older sister type. This one’s not going to be my favorite show of the season, but it has the potential to be decent.