I don't even think he's particularly over outside of his entrance and he's made no difference to attendance or TV ratings. Hard to get excited about a singles run when he's not at the level of the vast majority of the roster who are way faster, harder hitting and exciting in ring than he's ever been. I think Omega/Copeland would be boring as fuck. Omega working a New Japan main event style vs a 2008 WWE main event style will be brutal.
To be honest, I've always found him pretty dull.