Quite possible- but as of today, I am registered for a number of things which generate Avios directly into my Avios.com account, and which cannot be easily re-linked to BA (either because promotions have closed, because that's what the rules say or because of various web site glitches and difficulties). Also very important is the fact that using Avios.com as an intermediary makes it possible to transfer Avios from Iberia plus to BAEC if you have a BAEC household account.

For these reasons, plus the small possibility of any future opportunities or benefits that I'm not yet aware of, I would like to keep my Avios.com account open and would appreciate any assistance from anyone who can help me achieve that via AerClub, as described in my original post. Thank you.