As someone who now likes to buy digital when I can...
I am more concerned with the flash memory on the Tablet. 128GB at best... maybe? I guess the dock will have a bigger HDD? I hope managment between the two does nto become a big issues for gaming on the go.
I wonder if this will affect the price of carts at all, something like Skyrim will be pushing 4GB, wonder how cheap Nintendo can get media for carts.
I expect it to have no more than 32GB internal (maybe 64GB, since some games will probably reach 30+GBs) but support SD cards for expanded storage. The dock has what look to be USB ports, so it will probably support HDs in docked mode (so you can have a "vault" of games at home).
The best thing is that it's very likely that physical games will be playable without need for installs, since the cartridges should be as fast as the internal memory.
I think this will be the pricing scheme
I'm betting price will be
249-299- Screen and attachments for controls
349-399- Full bundle including docking station