I'm particularly referring to new capabilities that we can choose for given domains in the setup (especially for the 'custom' key, though) ... because ... as of my most recent update I've just seen stuff enabled on a bunch of sites that I didn't wish for it to be enabled for ... I have no idea what's now gone their way, unfortunately
I'm not complaining, or shouting about it ... just ... perhaps it could be a consideration for the future?
(the most recent addition is web assembly, I think)