I'm curious though, do you have some kind of process for doing this? I'm totally willing to go through a lot of bullshit to get the nodes working, cause I had a lot of other guns I wanted to animate properly.
I implemented kaisers model format notes as C++ data structures. They can load and save models, and I've been gradually adding some general-purpose functions, but for model-specific changes I write a dedicated function and recompile the program. Not terribly efficient, but it hasn't been bad enough yet to drive me to research GUI libraries. :b
Can fireseed import skeletal meshes properly? Converting from T2 to T1 is pretty generic functionality. I could maybe put together a reasonably user-friendly T2->T1 command line tool.