Should Undertaker return as the ABA?

Nope, the ABA was for the time and that time has passed. I really did like the incarnation though and thought he made it work really well especially as a heel with Big Evil. He rushed back perhaps too soon from a torn pec in 2000 and wasn't 100% for the duration of the year. However, in the second half of '01 and from 2002-2003 he got in better and better shape each week and his matches and performances just kept getting better and better as a result. One of the best heels of that time.

If Undertaker on a personal level decides to call it quits, or if medical necessity dictates he cannot continue I will understand and have respect for that. Although I do feel he deserves (and needs) a proper conclusion and closing story, I will understand if that just can't happen.

However, if all the circumstances come together in the right way and he's rebounded physically and feeling healthy and motivated for a final comeback angle/match then this is how I'd love to see it play out: I'd love to see a return along the lines of the disgruntled, late '98 Taker when he was getting closer to the Ministry of Darkness. I can remember a time when he was so (kayfabe) frustrated with things, angry, and he just wanted revenge and to hurt everybody. There was a time when he'd come out during random matches and just chokeslam the hell out of people or tombstone them. The crowd never knew when he'd show up and they went crazy for his appearances just coming out and reeking havoc.

I'd love to see Taker make a surprise comeback where he attacks a heel at the end of a Raw, or Paul Heyman or somebody. Maybe at first the crowd doesn't know it's him, and suddenly it's revealed to be. Nothing has to be said or done, in fact he can do the same thing (showing up, tombstoning, chokeslamming) at random times for the next few weeks, being p#ssed off, and building crowd anticipation for him. It wouldn't have to be explained why he was angry, or doing any of it because... the streak, the loss, age, Paul Heyman's words in 2014 about him... all of that would be a given as to why the Phenom would be mad and wanting to hurt people. Not saying a word, not cutting a promo, just showing up, kicking ass, causing mayhem would do so much to build anticipation, and restore his image as an intimidating force that can do what he wants, when he wants and it would work wonders to replace the memory of beaten down, injured warrior at WM 30 that fans have of him. From then you can develop a feud with anybody for a final match... someone can final challenge him and step up... Sting, Wyatt... whoever for a final showdown.

I feel that Taker, if he does decide to come back deserves nothing less then a killer and exciting conclusion. I'd LOVE to see him look, act, and BE the true Phenom again and remind everybody that the streak is not who he is and did not make him. I'd love it to be an Undertaker's Redemption storyline where even HE realizes that it was something else within him that fueled him and not the streak at all.