I'm pretty well in agreement that none of our guys are top-20 any more; they just don't have the legs/explosiveness that each of the 3 did just a few seasons ago.
But they're still all very, very good players, and top-5 easily at their respective strengths, which is why I think they could still have several years left, Ray as a 3pt threat and KG as a defensive specialist, and PP as an all-around very good player and eventual 6th man winner.
This is why we're still contenders in the way that Detroit was for so long: we have a team of above-average to very good players that fit together perfectly, but no superstar.
Of course, most of those Detroit teams burned out in the ECF after the title season and one more Finals appearance...unfortunately, we might be heading down the same road.