I may be jumping the gun here, I’ve not looked at any of yet, but with the source available I should think pretty much anything is possible, so long as you don’t trip over the EULA. Perhaps post these questions on the AnswerHub, which seems to get pretty quick responses, often from the team.
Re FBX Importer … less certain about that as it’s an Autodesk format and you’d have to refer to their licensing.