I have recently read a statement from someone at EASA stating that 'all national licences will go over the next 3-5 years'.
I will not stand for such a thing unless the equivalent EASA licence is issued free of charge, with privileges restricted to whatever the previous UK licence privileges were. Thus a EASA CPL would be issued to a former R/BCPL holder but restricted to identical former privileges.
As for the proposed Light Aircraft Pilot Licence, it's now looking pretty good. Microlight extension to 600 kg VLA is mooted - but if they give that then the 12-in-24 and Σ 1 hour are hardly unreasonable in return.