Well, in that case, I'll go ahead and post this. It's an magazine write-up from shortly before the Tennokoe Bank came out. Apologies for the table-breaking size, but the characters are hard to read if I shrink it down more.
"The Tennokoe Bank allays one worry of owners of the Tennokoe 2 and the CD-ROM system: lack of backup memory. To be precise, it gives you four times as much extra backup memory, and since it's also a card, you can easily carry it around. Recent RPGs and simulations require a lot of space in order to save, and many find themselves having to delete other data in order to do it. With the Tennokoe Bank, you can just copy it to your card. You can copy it back to the system later, and you can also swap the data back and forth at once. With the data on a card, it will be a piece of cake to take it anywhere. It goes on sale September 6th for 3800 yen."
On one hand, they were definitely aware that the 2000-block internal BRAM wasn't going to be enough for some people, and they seemed to be aware of a rise in popularity of games that need more memory. On the other hand, there's that "portability" aspect popping up again. That might really be the reason for the four-bank structure; they wanted to make it as easy as possible to play on a friend's system.
I'll see if I can find a proper advertisement, since that would be from Hudson themselves and not some magazine writer.
