Deus Ex: When you make a hybrid RPG/first-person shooter, basically what you are saying is, "let's make a terrible first-person shooter and then let them customize their character to compensate for it." Once you get enough skill points and good weapons, there's really no challenge whatsoever. Especially if you have a flamethrower, because nobody can attack you if they're on fire. Sometimes there's robots that you can't set on fire, though. That's why you have a rocket launcher. You can get a badass nanotech sword with a blade a molecule thick, but it kind of sounds like it's made out of paper. And it looks like a cheap plastic toy.
Deus Ex: Invisibile War: It's like Deus Ex, only with fewer abilities to customize your character and less to do. In the future everything will be oversimplified for the benefit of console gaming.
Bioshock: It stops becoming cool once you realize there aren't going to be any new enemies, and the bosses are the regular enemies, only with more hit points, and there's no challenge in the game because it doesn't penalize you for dying at all. I will give them bonus points for finally giving me the ability to murder Ayn Rand with a golf club, at least in spirit. Oh, and there's a moral decision whether to save the Little Sisters and not take their stem cells or harvest them for their precious stem cells, except the payoff's ultimately the same no matter what you do, because they leave you gifts if you don't harvest them. One day there'll be a game that forces you to make sacrifices to uphold morality. Of course, nobody would ever do that, because at the end of the day gamers would all rather save some gold than save the orphanage.
Morrowind: If I'm standing right next to someone and swinging my sword literally into their face, why doesn't that hit them? Because BethSoft hates me. The fun part is wondering when bugs will choose to corrupt your save file next!
Oblivion: Interacting with the environment would be more fun if your character wasn't the clumsiest person imaginable. He/she/furry just holds everything at arm's length, apparently, and always grips things loosely from the top. Somebody needs to make a mod that lets you break plates and stuff, since trying to move any object results in knocking over everything else nearby, but apparently they're all busy making disturbing sex mods. Props to BethSoft, though, for taking a really cool concept for a story and making it really boring. As to the scaling monsters: what part of you made you think the reason people play RPGs constantly is to have the exact same level as every monster you encounter?