Oddly enough I recently changed insulins(!) in order to get a pen that records doses (http://www.everydayupsanddowns.co.uk/2010/04/novopen-with-memory-please.html) so I’d say the demand is certainly there and dose recording is MASSIVELY useful for good MDI control.
I’ve looked into bg monitoring apps for iPod/iPhone recently too and there are only a handful, none of which look worth trying but some sort of fast/easy data entry on the meter/pda thing might reduce the need for wireless connection between pen and meter (though that would be really cool). I am currently writing down bgs / doses / carbs / units / activity / comments in a paper record – so if recording this data electronically was as quick that would be no problem. As others have said a pump style bolus-wizard would be very useful.
Some more observations…
A way to flag-up priming doses (air shots) as opposed to actual s/c injections would be very useful
Tiny point, but the animation seems to show ‘mg’ for insulin dose. I’d need it to be insulin units (100u/ml)
Bg readings in the UK are expressed in mmol/l (mg/dl in the US) – I’m sure you know this already!
A really smart move would be to make the pen compatible with a variety of cartridge styles – naively I assume this would only involve a modification of the threaded cartridge-holding moulding. Sanofi Aventis currently have a very poor set of pens available to their users IMO.