So, if I have a dozen SD cards, they all have to be Wifi+Storage cards?

And if I want to hot swap them while maintaining an active net connection (to an IMAP server, or a chat server, or something), then what?

1 expansion slot for wifi + storage is bad.

Since they're also going to be using a daughter card (I think) for the HSPA module, why not have that daughter card be HSPA+Wifi? They could even have it be a range of card options, depending on the customer's requirements:

Wifi only
Wifi + HSPA
Wifi + EVDO
Wifi + WiMAX

And when you add/switch a carrier, all you need to do is swap your wireless daughter cards. And then you're not mucking with the storage slot.

And the disadvantage that you can't comfortably type with both thumbs. I've tried it (and I used to regularly do this with my N800). That positioning works great when you're NOT typing. It doesn't work quite so great when you do want to type.

I maintain my assertion about the inconvenience of the N810's port positioning. :-}