I think it is fair to say that GTA VC is the limit of the Dreamcast's power.

Yes, yes, the port is technically unfinished, but the developer can honestly go on saying that until the end of time, no matter how many patches get released. That said, I really feel like we're seeing the end limits of what the console can do with Vice City, and given the timeframe of when that game came out on the PS2, that's a fair assessment. That 2002/2003 window would be around the time the Dreamcast would have a harder time competing. This idea is compounded by the fact that one of the developers who ported 3/VC to the Dreamcast said that San Andreas would just be a step too far.