1) Customizable Titan-trons. How hard can it be to have a few default trons that can fill in your wrestler? I mean, it'd be like the pre-PPV feud review clips on HCTP & SDvR.
2) The ability to rip music into the system for entrance themes.
3) More storylines in season mode
4) Create-a-move WITH some sort of code system so that you could put in a code from someone and it'd be able to put the move together for you instead of you having to try to recreate yourself.
Basically, take the graphics of SDvR, combine it with the existing features of HCTP and add the three wants above and I'd be happy.