Goldeneye (you know which one): You don't have multiplayer bots. True, consoles never even had a truly fluid FPS on them before you, and bots wouldn't show up for years to come, but the fact remains that if you had bots in multiplayer I'd probably still be playing it alongside Perfect Dark, instead of only playing your singleplayer (and loving it).
Also your Multiplayer level design wasn't too good. Too many dead ends and bottlencks. Thank god for Complex though- the best multi level in Goldeneye AND Perfect Dark.
Also Why U no HD remake?
Mercenaries Playground of Destruction: You had amazing variety in how to approach an objective, but stealth is never really one of them if you're on foot. Why include a suppressed SMG or shotgun if you can't ever sneak up to goons to use them on? Especially in the Ace contracts that were all at night? Also you tease us with the best aircraft in the game but don't let us buy them or find them parked anywhere. The only way to get an Apache is to snipe the pilot which affects faction standing. Also seeing jets fly over all the time and deliver all the great airstrikes without ever being able to use one yourself was a bummer.
Also Why U no on PC?
The Saboteur: The opposite of Mercenaries. Great on foot stealth, but poor effort with vehicles. Mercenaries had great Tank combat everywhere, but The Saboteur barely lets you touch the controls of tanks. And again, we see planes overhead all the time, but can't use any. Considering how much the game was about blowing up nazi installations, how awesome would it have been to steal a Stuka from an airfield and bomb sniper towers while chased by fighters, or even steal a 109 and duke it out with them above the citizens of Paris?
Battlefield 1942: Ahh Battlefield- I can barely fault your multiplayer, but I don't care what anyone says- Battlefield can and should do singleplayer. Honestly '42 could have had the most diverse singleplayer ever seen- it had gunplay, naval warfare, tanks and aircraft. You could have had various missions for each of them all over the globe, for different nationalities, too. You could have been the Operation Flashpoint of WW2, but instead you called it a day with botmatches, and in subsequent battlefields gradually downgraded singleplayer to almost nothing while focussing on singleplayer. Bad Company was hugely promising, but from BC2 onwards it became clear that you have no idea how to do singleplayer, so you're just gonna copy COD. I hate to say it, but your amateurish yet quirky Codename Eagle from way back in 1999 had a better singleplayer than BC2 and BF3 combined, and that's really saying something.
Just Cause 2: -Quick Time events. The ammo shortage I can deal with, but for the love of god you better not pull that QTE crap on us ever again. Hijacking worked fine in Just Cause 1, but with 2 you just shot yourself in the foot by copying Mercenaries 2's god awful system (pro-tip. Don't mimic ANYTHING from that terrible game). Let us hijack stuff instantly. Also the popped tyres and damaged engines didn't really enhance anything. Vehicles need
Critical Existence Failure next time, like in JC1.