The inevitable worst aspect of this pseudo-harem scenario is that it always involves a bunch of girls obsessing over one useless piece of shit male protagonist. And there is no reason why they would possibly want such a mediocre piece of human garbage (well, except the ones among them that are themselves mediocre human garbage... i.e. Chiaki), so the whole thing always comes off as horribly forced.
And that is a separate matter to how many fuckin YEARS they've all been in the club despite being in different years. Japan operates a 3-school system, doesn't it? So only 3 years, consistently, right?