I guess I'm kind of boycotting MW2 in that I don't plan on buying it any time soon.  I strongly prefer PC over the consoles but the PC version of MW2 essentially a console port; the things I don't like about the console versions will hold true for the PC.  
It's also frustrating that I can't really "express" this to IW. If PC gamers don't buy the PC version, then IW will say "the PC is dead so let's not develop for it anymore".  If PC gamers do buy the PC version, IW will say "What we did for the consoles is working on the PC so let's do more of that".    

Just saw that X3 on steam now has no more DRM .  Although the product page still lists DRM.
Maybe its time to nab this, after borderlands and tropico 3 and half minute hero and uncharted 2 and... aw fuckit, let's wait for 2010). 

http://store.steampowered.com/news/2894/    

Pros

• Generally really fun. Game makes you feel powerful
• Gfx are waaaaay smoother and look better than MUA1, which was far too "glossy" and stiff looking in combat
• Little comments and wise-cracks during combat are hilarious
• Love the fully destructible environments.  Almost everything falls apart or blows up. Makes you feel super :D
• Way more enemies on screen at once, and they have pretty low hp... makes you feel strong when you rip them to shreds
• Great story helps drive the game.  Writing is excellent too and has lots of humor.
• Fusion powers are relevant and destructive.
• Lots of achievements and unlockables.
• Split story line makes replaying worthwhile. 
• Deadpool

  
 Cons

• Invisible walls galore!  The great thing about the other games in this series is that you can explore everything.  If it's explorable, there's probably some hidden treasure.  If its not explorable, there's a giant visible wall stopping you.  But in MUA 2 the maps suddenly 'end' and this discourages you from exploring.  Lame.
• Cut scenes (both pre renders and close-ups of the models) look ass 
• Characters seem smaller on screen than MUA
• No per-hero equipable items, only team-wide boosts.  I was annoyed when they scaled it down in MUA1 from Legends but now items are completely gone :( 
• Maps are small.  There dungeons were huge in Legends and still pretty big and outlandish in MUA1.  Now some sections take 15 mins to run through and you're left wondering "that's it??".  I was surprised several times to suddenly run into the section boss.
• Still cannot modify your character's individual stats (though you were able to in x-men legends .. yet another regression)
• Even with gamma settings, maps are sometimes too dark

Ugh.. I can't wait to get home to play this, so I've been keeping abreast of the ratings that have come out.   Besides GiantBomb, I still follow IGN and GameSpot's reviews.  Mainly, they are pretty good indicators of what the general, mainstream audience will think.  Typically, their ratings hit just about the average metacritic or gamerankings score, +/- 5%.   
 
So GameSpot gave 7.5 and IGN gave MUA2 7.7.   Decent scores, but reading the review made me think a bit.
 
GameSpot's was written by Van Ord, who is an entertaining and interesting reviewer but I find his scores to be pretty harsh.  Relative to my personal ratings, he's consistently (5-15%) lower. Another weird thing about his ratings is that if you look at his review history, there are very few games that have gotten over 8.5.  It's like some magical jump where if the game is not a megablockbuster, super refined, and innovative game, it gets an 8.5.  Anyways, I digress.  I'll bet MUA2's avg on metacritic will be around 80-85%, based on Van Ord's history and review text.
 
As for IGN, it seems they were a little harsh.  As mentioned everywhere else, the game plays much like the original MUA with almost no innovation, save for the Fusion Powers.  Reading the review, IGN seems to have docked marks for succumbing to sequel-is-more-of-the-same syndrome, claiming that it's not much for being 3 years in production.   But Raven Software didn't develop this, Vicarious Visions did.  Switching dev teams is no easy task and it's not like this is the only thing VV did in 3 years.   
 
Anyways, I just from the text, I get the sense that the reviews aren't entirely fair.  Perhaps the annoying auto-level-is-always-selected bug or the fact that there are fewer suits, which don't convey different attributes or other reasons not emphasized brought the score down and it really is a ~70% game.  We'll just have to wait for GB official and community reviews to hit :)