To my mind "XC" does well as an abbrevation but as a name it s not working. It s not fluent (how could it be without a vowel) and it would be a rather bumpy word in every conversation. Under marketing aspects this coin definitely has an unsexy name. If you don t care about marketing that might not appear to be problem but a coin with this success story needs a professional branding. Everything else would be irresponsible.
Big problem: the X. If you stick to this letter you have a very limited choice as there are not that many words beginning with it, right now "Xeno" or "Xent" (oh no, reminds me of Cents so forget it ^^ ) comes to my mind but it still sounds that little bit too fierce because of the sharp "X". The other proposals, with all respect, sound as artificially constructed as mine because it s just hard to find a (compound) word with this capital letter.
I would have recommended to restart with new ideas, focus on the main features/benefits of this coin and find a fitting brand with no restrictions to its current naming.
We all are more and more getting the idea of how big this one could be. This one definitely would have needed a professional designer with a relevant skill set to ensure a proper brand identity. This premature decision might reflect the current rush but it might not be the best for the coin's future marketability and competitivness.
+1
Seems a bit rushed. What's the hurry?