Thanks for the feedback. Changing themes takes a lot of work for us, so we don't do it too often (Plus, I personally like this theme)
Which part of the main site are you speaking about making more mobile compatible? The Main x10hosting.com site is responsive from every device I've seen.
If you're speaking of the account panel, there's really not much we can do, since it's cPanel. We can modify the main theme, but in all honesty most people manage their account from a laptop, not their mobile.
That said, I'll definitely make sure our management team sees this thread.