Mr.House wrote...
This one thinks the lack of Krogan vanguard is really really strange, since you know. Them ost famous krogan is a vanguard.
The contrast is that, in MP, we're not playing galactic legends.
Since we're talking strictly from a lore standpoint, let me counter the most of these points by asking, how many Krogan did you see tossing biotic abilities around? And, of them, what was their rank and stature?
If you noticed, go back and look again, the chief examples of biotic Krogan are the battlemasters, which are the leaders of the culture. Wrex, even while on Shepard's team in ME1, was still already a leader of his people and several centuries older than the tank-bred, the mercenaries, and Saren's army, which I would assume actually is the rank of Krogan that the ME3 Spec Ops group would come from. The other example is the "boss" from Mordin's loyalty quest, who uses Barrier and I think tosses a few Throws around. But that's really about it.
And as for Barrier...Krogan Soldier has Fortification. Same thing, different skin.