1: What does "D A M P" stand for? Sorry for noob question... Edit: NEVERMIND. I'm stupid.
2: What I really want to know is how extensive the character appearance customization is going to be. I saw player characters in the trailer without helmets at all (which is how ME3 was able to do things simply), so I'm wondering how much aside from the armor we can control the look of the "head." This is probably going to be the deciding factor in how much I play the multiplayer aspect, if at all.
3: While they said the two campaigns don't affect each other inventory-wise, perhaps the single-player campaign could benefit from an "achievements" system, whereby slightly different cosmetic crafting looks are unlocked by completing certain objectives in the multiplayer. Not anything stat-superior mind, but stuff that just affects the appearance of your gear.
That last bit is just my opinion, however. I wouldn't trust EA not to screw it up.