Provide examples or reasons.
to give an abridged version because i'm not sure how much i want to invest on posting about it at the moment: it had the lowest count and quality of starting maps, forge world made for a lot of poorly performing and ugly maps (not even delving into the quality of the maps designs themselves there), the introduction of reticle bloom made for precision weapon duels turning into a gamble, AAs each broke elements of maps or encounters in their own way (hologram excluded), frag grenades are nukes and slower player movement make them impossible to avoid, the banshee is just ridiculous, i mean it just really botched the fundamentals. there were improvements in the TU, but it's still a mess of a game.
So there is nothing in between? It doesn't have to be great to not be garbage. You just dislike it, that's all there is too it.
there can be plenty in between, and plenty of games i just dislike or feel indifferent to, but i truly consider it a pox on the series and garbage overall.
edit: as monsterfracas mentioned, yeah this isn't the place for this so i'll drop it here before this gets derailed any further. go to the community thread if you want to see all the reach bashing to your heart's content.