Upload & Sell: Off
The RRS tripods look great, and I'd love to have one, but like you, I'm perfectly happy with my GT2540LVL and BH-40 setup. Perhaps the RRS tripod is better, but whether it's enough to matter, I couldn't say. I most often use the Gitzo at well under its recommended capacity.
As for new ballheads, not much new out there at the high-end, but I'd love to see RRS and Markins release something a lot less massive, to keep pace with the trend of lighter tripods.