That's the thing, going online and shooting with your friends is the same game...over and over again. Different guns, different scenery but the same game.
I dunno I got lucky with Skyrim, my playthroughs had minimal problems. I agree it was buggy, and so was ME3 but not too bad. Especially when you consider the depth of Skyrim, what a HUGE game. I didn't mind the ME3 ending but the Skyrim ending was terrible.
To me the online component is just a cheap way of recycling the same game with minimal development and story line. Easy on the testers too surely.... Can't have too many bugs without any involved game play. Certainly aren't taking a risk to come up with something new either