I considered doing LRSM when I retired 7 years ago, but didnt see the point as I dont teach and perform only occasionally. In any case my A Dip was ALCM (1963!) and they would probably have made me do DipABRSM first. I had learned Bach WTC Book 2 No 14 (My favourite of them all), was nearly there with Beethoven Op 31 No 2 and Chopin Ballade 3.
Hey @fsharpminor, I'm returning to the piano after many years and will never teach or perform (except to my cat/family/friends). Personally I find the diplomas a great way of focusing and enjoying practicing towards a goal - I definitely learnt my dipabrsm pieces better than I have before and found it really satisfying. Not everyone needs that kind of pressure/goal to move forwards and learn something properly - I do though!
Love the Ballades 3 and 4, I think they would be more sensible for an exam as they don't look so technically demanding and maybe a bit less 'done' to the examiners.