Nope - still confused!
LASORS states (for the addition of MEP to an existing FI(A)):
1) Hold a valid MEP rating
2) Have 500 hours total time
3) Have had the supervisory restrction removed from FI(A)
4) 30 hours PIC on MEP (Not including SPIC)
5) COmplete an approved course
6) Pass a skill test
The only change if for a CRI is that if they want to extend to a different class they need 10 hours on type in the preceding 12 months.
So I read it that an FI(A) who has 30 hours on twins PIC can do the course. I know there used to be a recency requirement about 10 years ago but I don't think it exists now.
I dont think anything changes for this under EASA an its ever-changing implementation date...