That is exactly the proposal on the table at the moment.
Well, if that is the proposal I have not seen it mentioned in any CAA publication. It also depends what is meant by "national". If that is taken to mean a sub ICAO licence, as in the UK NPPL, then that will not address the issue. An ICAO compliant licence will.
The more you look at the EASA proposals the more absurd they appear and the further they are from achieving what they purported to achieve, namely a harmonised set of regulations across the EU. Instead we will have EASA licences, National ICAO compliant licences (possibly), National sub ICAO licences for microlights etc .....