FFS. Waves were the best part of the game because on Nightmare they actually kept you on your toes. As for enemies spawning out of nowhere - literally every BioWare game had that to some extent. But yet again only in DA2 it was suddenly considered a problem.
I'm gonna call bullshit on this one. As someone who has played the Mass Effects, DA:O and BG1 a
lot, as in several playthrough a of the Mass Effects and most of the way through DA:O and in the middle of BG, I can assure that this did not happen that often in those games. Sure, in the end level of ME2 the Collectors fly up and attack in waves, difference being that they didn't literally pop up out of nowhere. Waves were done, but at least in my experience, it felt logical, instead of bandits and rogues popping out of nowhere. In DA:O, I have encountered only one point where the enemies illogically appear out of nowhere in waves, which was the Redcliffe quests. Lastly, I'm sure people would have gotten over that, had the rest of the package been decent to good, but it wasn't, so they didn't. Almost forgot, I don't know how it happened in DAI, as I, as someone who thoroughly enjoyed ME3 up until the last couple of levels, can't play that shit for longer than 30 minutes. /walloftext