To scale down the denomination of Byteball on exchanges (from Gigabytes to Megabytes or lower) has been debated for a while now, mainly for reasons of marketing. But someone has pointed out that there are deeper reasons for doing that: to define a Byteball unity as 1 Gigabyte would be like defining an unity of dollar as 1 Million $. Of course this does not make any sense if you are looking for mass adoption, like Byteball is:
Ordinary investors don't really think that deeply. A lot of them just go out and buy the cheapest coin they can find, hoping it will explode like Bitcoin. We need those investors, just like we need the true believers of Byteball.
Denominating GB as the basic unit of Byteball ensures that they pass on.