I was working for a little while to try to improve the WOIN character sheets on Roll 20, but I've not had time to work on them for quite a while and there's still some important stuff missing.
Some fixes are probably pretty easy HTML edits, like cutting the old obsolescent status tracks (which were mixed up a bit with a critical hit table that probably isn't needed). The sheet backgrounds also vanished not too long ago for some reason.
Some other improvements would be a little more complicated, but not too bad. For instance, the main thing I'm wanting right now (as my gear has been improving and I'm not at my maximum die pool as often even in my best skills) is that there's currently no way to put in bonus dice from equipment on skill checks. The other main issue is that the combat modifiers are mostly gibberish (they work, they're just very unclear and not at all user-friendly). It would be great if the skill rating could be copied from the skill section of the sheet, but that may require some advanced scripting (maybe more than you can actually do in Roll20 without using the API stuff).
I may eventually get around to fixing some these things, but if anyone else wants to work on it, please don't wait for me. You do need a Pro account on Roll 20 to test the sheet, but anyone can play around with the sheet's code on github:
https://github.com/Roll20/roll20-character-sheets/tree/master/WOIN