After I left the project the code have been re-written so the original modules won't work anymore.
Other than that, it should be quite possible to make new ones based on existing: TP Downloads for example. But again, it might be too much changed for it to act as a example.
Seeing as SMF 2.1 never got off the ground(its been 8-10 years now) and SMF 2.0 is still the standard, it would make sense to base a complete rewrite of TP for SMF 2. But I doubt anyone is interested in picking it up
although it would be best to actually get among others, modules to work properly.