There was a request on Reddit for an add-on transfer. The OP has previously developed a fork of the add-on, this is a small change and not planned for future development, but there were a lot of downloads of the add-on (6,461) so the OP want the add-on to be transferred.
reddit post: what to do with my add on? is there a way to transfer this it to someone else?
So far I fixed 50+ broken add-ons for free so I can take over the development, I suggested this to the OP and the OP said it would be ok.
I think that official Anki has already changed the author of add-ons several times. Is it possible to change the author of the OP’s add-on to me?
OP’s add-on (fork): multiple choice with 12 options
me (Shigeyuki): other items