Pitch count is pretty freely available information on MLB.com or BaseballPress, as noted by multiple Ottoneu owners in these forums. I don’t consider recent pitch counts to be an analytical metric but more akin to knowing which SP is starting on a given day. For those reasons, I do not think adding PC to the lineup page is much different than the other things on the lineup page. You still have to figure out how much you are willing to pay for a player and how to evaluate trades for your team.
I agree there is a line on how much information Ottoneu should show to owners, and that part of the skill gap in Ottoneu is using the right information to make better decisions, but I do not think recent pitch count crosses that line.