I would change a couple of things:
+ Total storage works out to be what the current kernel on the N800 supports, so I don really se that as a problem.
+ You do have Debian. You've had Debian since the N770.
+ No Cf cards is fine with me. SD is enough of a standard that cards are plentiful. What cheeses me is the Micro SD cards. Many, many current tablet owners have standard sized SD cards that are now no longer of use in the new tablet.
+ Obviously oriented to English-speaking users.
I won't give a plus or minus to either the clamshell or keyboard. They're both highly subjective. I will comment, however, that the clamshell design seems to be out, and the slate form factor seems to be in these days (as witnessed by the myriad of UMPCs and upcoming MID designs). It would be nice if they included a cover-protector like they did on the N770 though. I've mentioned before that when I bought the N800 I thought I'd miss the Zaurus' thumb board, and didn't (and still don't), so that's why I say that it's also subjective.
R.
==
compared to z, seems like this:
+1 memory
-1 even less total storage
+1 screen
-1 no debian yet
+1 wifi
-1 cf
+1 maybe will have more anglophone users?
-1 clamshell
-5 keyboard might not be as ergonomically thumbable
? support for hw in e.g. debian?
? weight
? speed
? sound
? reliability
score = -5 + ?