Oh hi new video! (Gameplay Series - Part 2)

Interesting.  

But to answer the question a 'power cell' is esentially like your grenade consumable powers in ME 3, from what I can gather.  You basically use them and then once you get to zero you can't use them anymore.  Which might explain why they pack a bigger punch, but if they can regenerate that is really insteresting.  And might really change my build.  omg this game sounds soooo awesome.  

My Soldier/ Infiltrator Ryder may use some of those powers but will have a ready made backup 'favorite' for when those things run out because...well generally in ME 3 I found the Grenades to be very hard to aim and not very practical.  Same with the trip mines really in the MP, some of them were difficult to set up properly.  

If combined with powers, I think it's a rather good choice. But on that note, going all shooting will be a bas idea. An Italian site made a Q&A shortly after the end of the embargo, and while not always praising the game, he mentioned going only with shooting will end you killed.
He also praised the AI of both squadmates and enemies, for anyone interested.

There are abilities that increase power cell capacity so I can only assume we can just take so many with us when we visit a planet. But it could be that we can find them out in the field. Like enemies drop them or we find them in crates or other alien technology.

To be fair Nova was so incredibly OP in ME3 that something needed to change. It dealt top tier damage for a power with the pierce evolution(which pretty much everybody took because of how much damage it gave you), it was one of the top tier detonators, it gave you damage immunity, and it was off the global cooldown.

The one downside the ability was supposed to have, the drain on your barriers, was laughable compared to all the immunity frames Vanguards could get on top of the fact that Biotic Charge just regenerated barriers anyway.

I can understand either splitting or toning down the Pierce evolution, but I'm not sure that detonation needed to be removed from it.

You still use powers, like backlash or trip mine. 
I'm just saying what I heard. We'll see if it's true soon enough.

Biotics seem to me like they were nerfed overall. At least that's my impression. Nothing looked like it did a lot of damage, and crowd control probably only works on unprotected small enemies for the most part.

The fact that switching profiles causes a full CD for all abilities is annoying. I could understand CD carrying over after a switch, but that's just another nerf for powers in general.

All in all Engineer and Soldier powers seem outright more effective, with more damage AND CC (freeze ray/blast) not to mention the ability to deal with barriers AND armor.

Biotics do give access to charge and that shield which both could be useful, but when you could just take a cloak instead, for protection AND uninterrupted mobility.

Biotics seem to me like they were nerfed overall. At least that's my impression. Nothing looked like it did a lot of damage, and crowd control probably only works on unprotected small enemies for the most part.

The fact that switching profiles causes a full CD for all abilities is annoying. I could understand CD carrying over after a switch, but that's just another nerf for powers in general.

All in all Engineer and Soldier powers seem outright more effective, with more damage AND CC (freeze ray/blast) not to mention the ability to deal with barriers AND armor.

Biotics do give access to charge and that shield which both could be useful, but when you could just take a cloak instead, for protection AND uninterrupted mobility.

i think turbo charge with cloak would be pretty sick damage output. 

Yes. That's the currency in Mass Effect.

I think the point is that it would be a waste. Its like nuking a place like Hawaii.