While it would be a coup to grab 2 Max players this summer, I highly doubt it happens. The C's would have to just about empty the basket of assets to do it for a short window of opportunity...I don't think Danny wants to do that.
Adding 1 Max player, OTOH, is something I think Danny is going to work hard to bring off. Hayward is target A, George might be target B, Griffin *might* be target C, and I doubt anybody else out there is both available and worth a Max contract.
However, adding no Max players this summer is certainly not the end of the world! This team made the ECF, but unlike the 2002 C's team I think this one can still take a step or two forward. Brown, Tatum, high draft picks, and several young players still improving means it's still two or three years early to know whether it has maxed out and needs to be blown up.
Danny came in summer of 2002, decided that team had gone as far as it could. He began to unwind it churning and churning personnel trying to remake the team. He kept only the young Paul Pierce.
This time the C's might have the cashe of assets to carry them to the next level without having to break the team down.