To play the devil advocate sort of thing, if you would have taken the time to 100% complete every zone, complete all challenges, and do every single side quest on your first play through, then none of it would be repeatable content to you, and it would have been a much lengthier play through, most likely closer to at least 50-60 hours, and still completing at least one play through of each Proving Ground and Circle of Slaughter, Slaughterhouse, etc will still at least give you a little bit more time to play and enjoy, and they are releasing new content for B3 every month they said, first content drop coming at the end of next month.
I am excited to try out Gears 5, I haven’t purchased it yet since B3 came out so close to it, but will most likely purchase it before the end of the year. But I will say, there isn’t much content there that isn’t repeatable in that game either. The campaign I read is about 25-30 hours at most, and then you have horde mode (which is similar in style to CoS in B3), Escape the Hive mode, and multiplayer, but if you don’t like repeatable content, then playing each map once will not net you much play time in that game either.
I suppose you can play player made custom maps created for the EtH mode, but how many will actually be really good I wonder? Not really sure about that, haven’t played it yet so can’t tell you on that.
Yes split screen is suffering performance issues for sure. I can agree with that, but playable, as my girlfriend and I beat the game with it. Vertical splitscreen is a personal preference, I prefer horizontal, but again, I understand wanting vertical for people who enjoy that and hope they add it in, but I am sure that they will, as it was a feature that existed in older versions of the game.