Budokai 3 HD is coming out this year, sold with Budokai 1 in HD as well (oddly no 2
).
From the little I've played of Raging Blast 1 and 2, and reviews of Burst Limit, I'd say Tenkaichi 3 was the last great game. I'd like to see the same controls and gameplay of tenkaichi 3, with PS3 graphics, and a few improvements like adding GT Vegeta (all forms), correcting Nova Shenron's move set to the moves he actually used in the show, adding Tarble and SSJ Bardock, etc.
No new concepts or modes or anything, just add characters, stages, music, etc.