I can handle the base2 / base10 problem by using context. I don’t need a clumsy new prefix.
If someone on the street asked you how much memory your computer has, how would you answer? “Seven gigs”? “Seven gibs”? “Seven gibibytes”?
I feel numbers ure a much more powerfull abstraction than any particular unit, so when there is friction like this between conventions, I prefer to favor the number. Giga is 10⁹ and Gibi is 2¹⁰⁰ whatever the actual unit behind it.
The underlying storage cell arrangement is still (typically) 4096 bytes in size. (or 65536 (64KB) for many embedded devices).
The device probably has about 10% of it's real storage capacity dedicated to ECC and other 'administrative' uses for provisioning the user facing storage.