So some comments and specualtion from the mp footage in the sony pre order trailer...

1- If I would have to guess I would say the green humanoid icon is an ally locator and the winged stars are the objectives targets, for instance in the trailer it says data transfers: A Complete while B and C have yet to be complete.

2- The other option could be the successor to the missile launcher, and the ammo might just be ammo refill... However, I do like the idea of switching ammo.

3- That faction of Ark deserters most likely, or Cerberus 2.0

4- Stating again, but I believe this to be the objective since in the ME3MP there was a similar objective that I cannot recall the name of...

5-Most definitely

6- Looks to be the same type of enemy spawning from the original trilogy, jumping off from inaccessible upper platforms.

7- It seems to play exactly like the ME3MP, probably with the added edition of jet strafing, ground slams, and verticality. Making al little like Halo isn't necessarily a bad thing, unless they add a P2W mode haha, heh...

I guess we have no idea what a 'Multiplayer Booster Pack' is?

Because I want one

Gimmie! Gimmie!! Gimmie!!!

No, we don't know. I'm guessing that they'll be roughly equivalent to Veteran or Spectre packs. A nice boost for your first few days of MP, but the more playtime you log the less relevant they'll become.

edit: I think ME3 had something similar where the pre-order bonus packs contained the Collector Assault Rifle.