Ok, Kabam, let me start by saying that I don't want this to be another 'GIMME' thread. To the contrary, despite being a megafan of the TF Universe, I got hooked on this game in large part because of all the great stuff you gave us compared to so many other mobile games.
How about a daily t2a mission now? And/or at least raise the amount available in the raid store every day?
Just grind. You’ll get a ton of T2A essence or even a full one.
Ahh, yes... I almost forgot. Once or twice a month, i have the option to grind -usually only to 700k or so, because 2 jobs- through arena to get... About 2500 essence or so. Or, about 1/4 of a t2a. The rewards for alpha bounty desperately need to be updated a bit. Or better yet, throw the t2a arena in a few more times a month.
But I don’t think Kabam will be adding anything else soon, so this is our best option.
Pretty sure they just updated Alpha Bounty arena last time around.
I do agree the rate we can earn T2a vs other higher end resources is unbalanced.
I actually play Alpha Bounty to earn T1As and usually stop around 400-500k. I always seem to run out of T1As before T2As. To answer OP, I think one of the best sources for T2A is AM. Usually from the milestones. It just adds up somehow. I try to use up as much as I can, but end up selling them for T3A Essence and gold.