As the Cleveland Browns offseason activities continue, it is somehow both very important and not that important. It is important that the team get as much time together to gel, especially with essentially new systems in all three phases of the football, but there is little direct correlation (outside of injuries) between OTAs and regular season success.
Many players from around the league skip most if not all of the voluntary activities. Especially with the Browns but also around the league, that number had grown the last few years as the NFLPA pushed for more safety instead of more practices.