Generic AGs are too precious to spend where they're not necessary. Doom doesn't need to be woke and even though you have 3 Generics I'd still save them for other champs who really NEED to be awakened.
I say yes. The main awakened ability is a power gain after you nullify an opponents power gain. Not a big deal? On the surface I agree, until you hit more challenging content where you're playing him right on the edge against a power gain champ (meaning they are popping fast to SP3, and you need to get off an SP1 or SP3 before it's lights out) Can't tell you how many times that extra bit of power gain took a fight from certain loss to quick win. Once you get doom into his cycle it's over in a fight like that.Just my experience, having r5 max sig and 6* r2 unduped. I feel the difference in certain fights. He's always gonna be in your starting 5...so it's a good investment. Last thing, the post above is great advice - don't use AG's until you get the champ to r5.