My wants list is the same as it was with WP7.
Medical Apps (Med Reference, Tracking, etc)
Firearms related apps(Ballistics calulators, Reloading record, etc)
I used my WinMo devices from my TP2 back to my old WinMo iPaqs and Axims with many different medical program on it. MedSelect, Tarascon, just to name a couple. I also had a couple of programs on it to help me keep track of my reloading records, external ballistics calculators and such.
There's quite a selection in both iOS and Droid but nothing at all for WP.