This is a question of the development of the combined arms strategy of the GTVA going forward.
Having smaller carriers makes sense in the T-V War era when fighters are far more reliant on carrier because they had no shields and no intersystem drives to scale. If the GTVA were able to layer a better logistics, e.g. modular armor, internals and exchangable mission specific externals, fighter formations might become far more veratile than smaller warships.
Additionally, the development of strategies following the admission that the GTVA cannot match ship capital ships, both in numbers and individual fighting strength, and doing so is a fools errant, it might shift capital ships further into a carrier role/logistics role for fighter units.
The only problem of course with rising profile fighters over warships is the issue of the pilot -- can the GTVA "supply" enough pilots to make that viable?