I've got one of these and I honestly don't care if the band isn't secure. Sure they can get my motion data and I'm sure some nefarious insurance company could install bluetooth readers worldwide to pilfer my data, confirm that I'm not moving enough and raise my rates but... heck any good scale and heart rate meter would tell you that and probably be a lot more useful.
But now that it's been cracked -
I'd like to see somebody use this to make an android version of the software.
I'd like to see somebody interface with the iPhone better so when I get a call it could display the name of the caller or an appointment reminder on my band (ooh, wotta concept!)
And maybe, just maybe somebody would write a download tool that'd COLLECT THE DATA BETTER THAN NIKE DOES!!!! Because right now I average about 1 bad read a month. (Killer if you're trying to go for the consecutive days award or, y'know, actually, accurately *monitor* your activity levels)