There would be bugger-all room for dismounts in such a vehicle. The turret basket would take up all the internal room.
Not necessarily any less so than the real world MRVs/FSVs:


and if you look at the FV432s with Fox turret you get an idea of what
might be the impact:


One could possibly operate in a 3+4 configuration, either as a light IFV or a Recon Variant equivalent to the M3 Bradleys.
Or, as I mentioned, combine this with the AS4 lengthening and go something like 3 + 6.