what else?

i'd rather have secure, stable and slow. i don't know about locking the bootloader (do you have a reference to that? i'd like to read up on it). but i don't care that their rom is always the most recent one.

what matters is that e/OS is the only rom i am aware of that combines usability with security. graphene OS doesn't count because it is only available on pixel phones and therefore very limited in applicability. others i don't know.