I don't remember if personman made its mod GPLd (perhaps he did, I have to check my files to see if I have the source code as well) but if he did, you could modify his mod to suit your needs.
I don't think I can do anything, my idea was getting support, so OA community could play Q3F and experience the game, but is better to make OAF maybe it could use Q3F as a base, I don't know, but the point was to bring TF modality into OA.
EDIT: Is probably that someone knows the idea?, I cant helpt too much until now, but I would like to talk about concept and design, but for now I think that sticking with Q3F is the solution.
EDIT 2: I will make a new post, regarding the ideas of a possible OAF, tlaking about concepts and design even about models and mechanics.