I find the squad in ME3 to be incredibly dull. It's all rainbows and sunchine.
Everybody agrees, all love the alliance, Shepard is god...
There is no diversity, no ethical debate or interesting perspective.
Wrex could've been awesome to have.......but no.
They should've been at least 2 ME2 squadmates, to bring diversity and differents points of view. It would've been hard, code wise, but damn it would've been worth it. It really would have given a feel that this is the sequel to ME2, not ME1.
Damn in ME2, we had a geth, an asari justicar/ Ardat-yakshi, a krogan, a drell, a salarian...
So much richness and different things to learn and see
The only interesting squadmate was Javik, but he was DLC of course