If Ray and KG are willing to come off the bench for us next year for a small amount of money, there is no point not signing them. The free agent market is pretty small, we can only offer one max contract anyway without getting rid of Pierce. Both of them have shown they still have the ability to contribute on the court in short spurts, and their off-court leadership is invaluable.
A lot of fans really forget about how important and rare the kind of leadership that Ray and KG show is. Kobe, for example, one of the greatest players of all time (god, I hate saying that ... my fingers burn just typing it), but by all accounts is no locker room presence to write home about. Look through the NBA ... there are a LOT of veterans, but there are very few who are natural leaders, and willing to mentor younger players.