I cannot see why one lot of aeroplanes and instructors could not have done three jobs
1) Traditional UAS flying for undergraduates
2) EFTS flying for Direct Entrants with any post graduation 'top-up' for 1) above if they had not achieved the EFTS output standard.
3) Tradional AEF for cadets
Why did UAS undergraduates have to do the EFTS course during their time at Uni?
The cost was negligible, and the system paid for itself.