I love seeing the amount of passion and care taken in his sprite work. He looks so clean in all his forms. That being said, in terms of gameplay, he seems profoundly limited to speedrunning predetermined routes and that's just about it. His moveset is actually detrimental in pretty much all gameplay that doesn't involve skipping most of the levels. I still enjoy playing him, but it's hard to justify picking X Sonic in maps not designed specifically for him, or that aren't generally composed of a lot of straight lines.
If there's actual platforming involved or precarious areas, he's kind of frustrating to play. His 0-100 playstyle is certainly flashy and cool, but functionally doesn't seem to fit into 90% of the content SRB2 has to offer, which is a shame because I still want to keep playing him. But not by figuring out all the angles to skip the levels. It kinda seems like he was designed to be played exclusively by grindersky or by veterans who have nothing left to experience besides beating the levels comically fast.
There is undeniable skill and passion used to make X Sonic. But functionally, he doesn't seem to be made to be played outside of maps designed for him, as you're either uncontrollably fast or disappointingly slow with no granularity in between. In typical gameplay that results in you ironically being slower than most characters because unless you're skipping platforming, you're accidentally overshooting it with no way to course correct unless every move you make is pixel perfect, which is just unwieldy and unrealistic. Also, the circumstances for a helpful wallrun are way too strict for it to be a reliable method of traversal, and most of the time you try it, you don't get to where you want to be. Zip-dashing around looks cool, but is almost always an impractical choice so players feel the need to just walk around at a slower than normal Sonic pace. Though, despite my criticisms, I feel that with some thoughtful modifications or perhaps an alternate setting/mode/moveset for him, he could be perfect.
I'll be watching the development closely though as this mod was made with talent.