For all it's worth, I'm developing a serial LCD / VFD plugin.
Currently got it working with my (2) Noritake VFD 40x2 and also build an on screen (simulation) LCD...
It's only serial at the moment, haven't looked into parallel or USB yet, only cause I have none of those devices...
I've just finalized the code so it can be expanded to the likes of other LCD's / VFD's easily (modularized = object orientated)
If anybody wants to post relevant info, pdf manuals, connection schematics and/or programming info of their devices, I'd be happy to research it a bit and get a pseudo module up and running for them to test.
I will provide the code somehow soon.