EBCAU
I think you may have mis interpreted it - either that or I have completely mis interpreted what you are saying. Correct me if I am wrong.
Usually a pilot completes a BFR to the isue standard of the highest licence they hold. Eg I am a cpl holder so my BFR is to cpl issue standard - this covers my PPL then as well. (so if my class one medical expires but I still have a class 2 and want to go for a hack i can).
Also whenever I renew my instructors rating - it is also signed off as meeting BFR requirments under part 61.
Now the bit about resitting the law exam - that has always been there - just worded as 'if a pilot has not exercised the priviledges of that licence for a period of 5 years or more' they re sit law exam. Looks to me like a change or wording but looks like same meaning. So if you do a BFR every 2 years and keep flying you won;t have a problem!
Heck I wcould be way of the beaten track here a completely mis read.... let me know if i'm on the right track!
rgds
6080ft