Ahem...it seems that due to unforeseen tactical circumstances I will have to revise my class selection to the Soldier. Note, my decision is in no way related to the rumored side-effects of gratuitous b00bies, no matter how voluptuous they may appear.
I'll point out that Vanguards can work in that role quite well, too. They could in 1, and going from the non-trailer trailer, they will still in 2. Unless there's some soldier-boob thing I am completely unaware of
Yes, Soldier-Boob is one of their unique abilities. Didn't you find it suspicious that no other conspicuous special ability was mentioned? Sentinels have Tech Armor, Vanguards have Charge, Engineers have Combat Drone, Infiltrators have Cloak...and Soldiers have Implant, a highly advanced mass effect powered implant that can be toggled to enhance either boobs, hips, legs or ass.
However, you're right. I'm switching to Vanguard 'cause that Charge ability is immense. I'll be able to kill through walls Perfect Dark style! Not to mention that Shockwave is the Mass Effect version of Fireball.