I know but taking an all pro talent and not replacing him makes the team worse. I think that's hard to argue.
It's a wide receiver, the most overrated position in football
It gets all the limelight, but if you have a great QB and great scheme, that's more important to a team's success, at least in the regular season. In a one off game, you want studs everywhere, but big picture any great QB and great offensive coach can make anyone look good at receiver - you can scheme them open. The Patriots never had good a great receiver there except for Randy Moss' one great year there. Tom Brady made nobodies look good.
I'm overstating this i'm sure, but as long as they replace some of Hill's traits (quickness, straight up speed) they can manage just fine