I just rooted my thunderbolt what should I do now
Sent from my HTC ThunderBolt using DroidForums
Go to Disney Land!
Couldn't resist, sorry.
In all seriousness, it depends - why did you root it in the first place? You can install different radios, kernels, put a different ROM on it, or just take advantage of root apps. It really depends on what problems you were hoping to fix, or what new things you want it to do.
For better battery life and Gingerbread, you'll want a custom ROM, and potentially a different kernel or different radio. Hit up The Official Thunderbolt ROMs & Kernels Listing 2.0 for a pretty thorough, up to date list of all the different ROMs, kernels, and radios for the Thunderbolt.
I would recommend going with a Sense-based ROM, as a lot of the AOSP based ROMs are having difficulties with GPS/cell based location. Every AOSP ROM I tried thought I was in Greece, no matter what radio I was using. Switched to das BAMF Sense 2.1, and magically everything is just perfect.