Combos

Fire deals extra damage vs armor. Biotics deal normal damage, but can send enemies flying.

I am kinda disappointed that they took away warp, but I think those spike thingies can be evolved to be extra damage to armor.

Except Singularity is pretty much only good against unarmored, unshielded opponents. Although one upgrade does allow it to damage shields. I suppose they got rid of it to balance out the other powers though.

The problem with Warp is that it was basically the Biotic version of Incinerate... Made to destroy armor and deal damage over time. It would need some new mechanic to distinguish it, especially considering you could just take Incinerate instead.

I will admit, though, Biotics biggest problem is definitely armored targets. Only thing you can use to prime them is singularity (and I think upgraded Shock wave).

I find Aegis takes care of annointed pretty quick. If Aegis is leveld high enough I can kill one without breaking the shield. Singularity and throw worl well in tandem, if they are shielded.

Annihiliation primes armor too.

You're talking about Backlash, I assume. (They ditched the developmental name "Biotic Aegis".) It is not nearly as useful above Normal difficulty. Enemies shred it too quickly to do much of anything. I think it fits best on a shooter character who wants a defensive power that allows for mobility. I've toyed with the idea of an Explorer (Backlash/TacCloak/Turbocharge). It's not the most optimal choice, but it would be fun.

I looked for Warp last December, when we got our first glimpse of powers. When Ian told us that Warp had been rolled into other powers, I waited to see what would happen. I can say that I definitely don't miss it. Losing a power that gets spammed all of the time, and replacing it with a greatly improved Singularity, among other things, was a great trade. Singularity does what Warp did, in terms of priming. It does it while lifting and entrapping unprotected enemies. It does it while eating shields. It does all of this simultaneously over a wide area. Detonating it doesn't even end these effects, either.

Hit a sharpshooter or fiend within your Singularity's AoE with a Throw or Lance, and see what happens. Biotic detonations are the most destructive force in the game, from what I can tell. They can remove protections nearly as quickly as the more "specialized" powers. The Adept gets Biotic Echoes for a bunch of secondary detonations. BEs tend to chain together more frequently and effortlessly than other combos. A biotic Ryder is definitely not at any real disadvantage when facing shielded or armored foes.

I like the current balance between Combat/Biotics/Tech. (I'd prefer more Combat powers, rather than energy cell skills, but that's a different complaint.) Each grouping of skills is essentially equal in capability with the others. Unless you're totally clueless, it's hard to build a "bad" character.

Ironic.
Incinerate is my favorite power so far... invasion right behind it.

I've not played on Hardcore since 1.04, and you're right that Backlash worked fine, then. I should've said, "It doesn't hold up well on Insanity." It's a very cool power. I just found it much more exciting to have something more active. Reflecting fire is fun for a while, but I'd rather have Pull, Singularity, Throw, Lance etc... I always have an offensive skill off cooldown, this way.

I guess that Warp and Singularity were very similar in the OT. They felt very different, though, since they were mutually exclusive and linked to specific, class-based playstyles. In MEA, I use Incinerate a lot. It's stand-alone damage is relatively unimpressive, but its utility as a combo detonator and primer is great. Combo damage is the "real damage", anyway.

Out of curiosity, how low can you get the cooldown on singularity? I'm pretty early in the campaign so I don't have the skill points or augments to test it out.

only if you kill? and which passive?