From what I understand Roll20 limits the number of character sheets available for an RPG. I often play older or more obscure games and either there isn't a sheet for my game of choice available, or the one that's available isn't to my taste. I couldn't care less about all the code and automation that's been popular in recent years, and it leads to confusion for my groups. We can roll a d20 and remember that the guy gets a +1. So while I've used ASCII text and pasted that into a Roll20 Character on the Bio and Info tab, entering custom information scoots the text all around. I'd much rather be able to paste a form-fillable PDF character sheet into each Roll20 Character, have the form-fillable function work, and let my players change the data as necessary. Thanks for listening.
