Ian, salute.
The Call for Papers for the MariaDB Server Fest is open until 16 August. If you have an idea to share, anything MariaDB-related, new, fun, interesting, scary or exciting, you are welcome to submit at https://mariadb.org/fest2021-cfp-submission/
Sorry for delay. But I hope I am not terminally late :-). There are two projects that I think are of interest to the public: MDEV-21117 recovery for semisync by Andrei Elkin and Sujatha Sivakumar; This work is already done for 10.6 MDEV-11675 Lag Free Alter replication by Sachin Satja and Andrei Elkin This work is at QA for 10.7 (was planed for 10.6 ES, which patch passed review and most of QA). I can compose and fill in what is necessary according to the submission rules, by next week Mon, 23d of Aug. Cheers, Andrei