1) Whoever complains about the Reapers attacking Earth like they do instead of orbital bombardment - don't forget they want to HARVEST the humans, not just kill them. That much was made clear in ME2.
2) Yeah, graphics are not such a big improvement... I'm still outraged with low resolution armor textures. Faces are made really well (ESPECIALLY Wrex's face! So high-detailed!), but bodies...
3) Multiplayer is FUN as hell. I recommend.
4) Origin is easy to use, doesn't slow down your PC like some idiots claim and makes inviting people to multiplayer very easy. I like it. As far as "spying" goes, to hell with paranoia, all my info that I don't want to share on teh internets is simply not on my computer
6) My country gets N7 Collectors' Edition at half the price
Great DLC "From Ashes" (DO NOT LOOK IT UP, major spoilers!) is included for free, as well as a bunch of extra weapons.
7) [strike]Mass Effect 3: Playable On A Wide Range Of Hardware[/strike]
Mass Effect 3: made by BioWare's worst console/Apple fanboys team (Casey Hudson, Mac Walters, Preston Watamaniuk, Chris Priestly, etc.) who can't understand PC gaming for $h!t. Fixed...
...And I still love the series; it's that good.