At the time that Mordecai was with the WWE, I was still relatively new to the wrestling world. Meaning that I hated every single heel and loved every face, but I've since learned not to be like that. I hated the concept of seeing Mordecai ''crucifying'' people and I just hated the character in general. At only nine years, Mordecai did kinda scare me a little bit. He went undefeated for a while, with victories against Scotty 2 Hotty, Billy Kidman, Hardcore Holly, and more. That loss to Rey Mysterio, which I was heavily rooting for, really messed up his character.
Even now, if Mordecai was still with the WWE, I doubt he would be as dominant as he was during his short stint in WWE. No one has the same dominance from the beginning to the end of their career. And I did hear that WWE had plans to have a Mordecai/Eddie Guerrero fued, which I wouldn't have liked because I feel that that would be a bit of a downgrade to Eddie, especially since he just lost the WWE Championship, at the time. An Undertaker/Mordecai fued may sounds good on paper, but I doubt that it'd be a good fued in general and I don't like how the new talent like to target Undertaker so much. So, if Mordecai was still in the WWE, I don't think he would have found much success, maybe just being a jobber now.
P.S. I was so shocked when I found out that Kevin Thorn was Mordecai. I loved the Kevin Thorn gimmick, but hated everything about Mordecai. See what a simple gimmick can do?