EDI, once you get sabotage up to tech vulnerability. Then you can bring liara or garrus as the second. You can detonate fire explosions with warp or proxy mine, both of which have debuffs. Garrus also lets you alternate combos with overload.
I used James for tanking, nades, and carnage. I take Liara for Cerberus b/c of her biotics. Her recharge for singularity is quick enough that she can set off explosions on her own. Kaiden is good for Reapers because of his bulk with Reave and Barrier, and can set off my tech bursts too.
"I could care less" means you care right now. The proper phrase is "I couldn't care less."
Kaidan/Liara was my best Engineer squad - you get pretty consistent biotic and tech explosions through all of the powers combined. James and EDI are also a pretty great squad if you want to focus on fire explosions.
I took Kaidan and Tali (feel free to swap for EDI or Liara if you don't have Kaidan). Tech explosions for all, and no fewer than 2 of the 4 drones/turrets on the field at any given moment. Plus, you've got straight up firepower with 2 shotgun buddies (arguably, Kaidan's better off with an AR, but...).
Another day successfully wasted. "I need a new quote for this signature." - Me
I've always normally used Shepard with Garrus and one of the Krogans. I dont know if using James as the tank would be as cool/the same as Wrex and Grunt. Using EDI seems like it would be fun I'm torn between:
Shep/Kaiden/Garrus...These guys have been around from the beginning hmm
It would appear as if I can't have both the sentry turret and combat drone out at once. The drone explodes when I throw the sentry out. I'm still at a stand still on which route I want to take for powers with Kaidan and EDI too. I'm finding this much more confusing than ME 2