Here's a thought for you, then. My ATPL includes all the privileges of an LAPL so if my SEP class rating expires, and I cannot or do not wish to attend an ATO for refresher training, I can continue to exercise the LAPL privileges in an SEP aeroplane provided I continue to meet the recency requirements in FCL.140.A. .... or can I?
Why would you need to meet the recency requirements in FCL140.A? You are not "the holder of a LAPL(A)" you are the holder of an ATPL(A) exercising the privileges of the LAPL(A). You still need to meet the requirements of FCL.060 before carrying passengers of course.
But hang on:
FCL.700 Circumstances in which class or type ratings are required
(a) Except in the case of the LAPL, SPL and BPL, holders of a pilot licence shall not act in any capacity as pilots of an aircraft unless they have a valid and appropriate class or type rating, except when undergoing skill tests, or proficiency checks for renewal of class or type ratings, or receiving flight instruction.
So if you are the holder of an ATPL(A), you require a valid and appropriate class or type rating, even if exercising the privileges of a LAPL(A).
Nice try though. Looks like it needs a tidy up: why should an ATPL(A) have to go through a class rating renewal including the FCL.740(b)(1) refresher training when a LAPL(A) holder can just do a prof check?