Well, personally, I'm extremely excited about the possibility of an update to the TRPG mod. Or if you prefer, a modified version of the TRPG mod.
There's a few things that I really love about RPG's:
The most obvious part, is getting stronger and learning new abilities. I mean, even though that has absolutely nothing to do with the actual term "RPG", that's exactly what defines the genre. I'd think it'd be great to have new abilities thrown in that will become available at various points for players. I mean, it would be awesome if there were still spells to learn that no one knew yet. Of course, it would also be kinda pointless to add new skills right now, unless you wanted to stick them on RL 10,000 or something.
I love finding new treasures and rare items. The idea that something newer and better might be lurking around the next corner. Unfortunately, there's not much potential in TRPG for that it seems. Unless I'm wrong about a cap to the number of items in the game.
I love the multiple classes, and the way (good) RPG's bring players together with them. I like the rules set forth for me, along with some freedom in how I build a particular class. That probably also explains why I've hated many of the newer Final Fantasy games, but loved the older ones.
The strange thing about it all, is that TRPG doesn't really do any of these particularly well. But I still really enjoy(ed?) playing it. I'll find myself hunting for other online RPG's more and more now. Maybe it's just time for me to move on, and forget about any possibilities of a new and improved TRPG. My friend plays WoW, and I'm enjoying that with a character on his account. I'll probably go nab a copy of that when I finally get a new computer.