I wouldn't mind a switch from MySQL to PostGreSQL. PostGre has had a long history prior to its collision with SQL, and it remains in active modern development even now.

I had the opportunity to work with it recently on a project. once you get past the differences in syntax between MySQL, standardised SQL and what PostGre uses, it have a surprising amount of stability for a open-source database.

But they say a good database engineer can make any sensibly designed database work like a charm. what do I know?