Players can't sit around with all the Summer off. They need at least to have meetings to learn the schemes. However, how will they really learn from not having on hand training as well.
Possibly if they make it start in mid June, this is where they get the meetings and some on the filed work that will be like the OTA's, then by mid July be ready for the TC type practices.
If you think about it, they have 3 - 3 day OTA's, and a mini camp, last what about a week? So that is about 2 weeks worth. So speed that time out to 4 weeks, then when they start TC, everything is still fresh other than waiting a month to use it.
But what about the 6 weeks or so after the draft until they start this. Can they at least have some team meetings.