Hey guys, I've been in the lab with X, testing out his specials and finding guaranteed setups for his buster overhead move (the hard-to-blockable mixup to be more specific), so far I have not found a partner that can set it up. Despite my search for the setup, I personally feel like X in this game is kinda weak without the HSD glitch, due to the fact that all of his zoning tools can be easily avoided and that they can be nullified (his boomerang goes away when he is hit). Piercing properties that characters like Gamora and Rocket have with their pistols makes X's zoning seem even more weak. He can sort of support and cover his partner when needed but he really doesn't do a good job at anything else, even if you were to put him as a point character. The only thing I like about him is his Rising Fire as it is a pretty damn good anti-air, but I feel like it won't be as useful over time once people start figuring out the match-up.
I'm planning on continuing to lab with X, but I'm close to just dropping him from my team since other characters have better tools.