You're also presumably not a $400m+ company, which makes it more intestesting.
In my experience, the blog usually falls in some weird space where the marketing team owns it somehow. It’s best to leave them be and let them handle it, because if you suggest an alternative and then something goes wrong or isn’t to their liking you’ll never hear the end of it.
My point was that it's not trivial to migrate away from blogger.
I assure you no amount of capital trivializes the endeavour of migrating to/from Wordpress.
GP speaks wisdom.