White Wolf / Onyx Path games in Foundry

I'm currently working on a campaign for the Onyx Path system Exalted, and I wanted to build out a Foundry companion for running the game online.

That said, the Exalted 3e instance isn't actively supported by the publisher, Onyx Path, and only lightly supported by the community at large.

I'm curious to know if anyone else is working in a system with minimal 3rd party support and what their approaches have been to implementation.

Should I just go with a more generic but better supported mechanics engine and try to jury-rig the game from there? Should I stick with what's out there? Or is doing Foundry for this kind of project s fool's errand?