When rendering my whole scene (including text) to an FBO instead of screen, multi-pass (MSAA or VBAA) font rendering renders to its internal FBO (1st pass) and then to screen (2nd pass). There should be a way to bind my own FBO before 2nd pass rendering takes place - not sure if inside RegionRenderer or TextRegionUtil or somewhere else.
Not for now, perhaps on commission / contract. Note: Soon we shall be able to AA in 1-pass, dropping the FBO mode/model.