as someone who manage client site: ihate it cause now i have to explain this update (nothing seamless here, if it will trigger question my user)

as blogger, i dont use it. will disable it.

as developer: now i need ro re check all custom meta box script if it still working/compat issue, etc. hate it.

as someone who care about wp growth: i dont think it will WOW potential user and get them onboard.

anyway, i also hate staring at lightbulbs.