Depending on what happens it is even possible regular visits by an FAA DPE charging a "fair" fee will become the norm. Of course our friends in Europe could put pay to everything, standalone or 61.75 - I am guessing you would not be that chuffed then if you have just done a standalone and a foreign pilot conversion or stand alone IR.
EASA cannot control what the FAA does. And I cannot see the FAA stopping the 61.75 option just because EASA is throwing its weight around over here. The bulk of the known universe flies on FAA or FAA-based papers; Europe is just a little blob on the globe.
There should be a total of 3 ways to get the 61.75 updated in the UK but none of them cost less than a few hundred quid.