Nexus Buddy 2 - Granny Editor for Civ 5 2.5.3

You might have to use Load String Database to load the relevant .gsd file first. After that make sure you have opened the correct .gr2 model (there are some files that seem like the legit model from the filename but aren't) and then export the animation.

 

No it doesn't handle materials except for creating materials with the relevant names.

 

I have made a guide with installation instructions: BE SDK, Nexus Buddy 2, Civ 5 Old SDK.