Do we really need the MLE to sign a backup center and Eddie House? I really don't think we do.
Some of you are proposing that we replace Posey with the pu-pu platter of role players.....but it doesn't work like that. Good teams stick primarily to an 8 man rotation, with some occasional spot time for weaker players.
In theory, we could sign three guys that could play 8 minutes each, and each give us some of the things that BGJ does. Then, in the playoffs....those guys would get exposed for what they are.
This is my position as well. The sum of a few player's talent in the NBA can never equal those talents in a single player. The restriction comes in because you are only allowed to play five guys at once. Three examples/anecdotes to support this point: First, if we sign Matt Barnes (a 3/4 defender), a three point shooter, and a Ross to be a wing defender for the same money as Posey, that is a huge mistake. When we bring in Barnes, for example, to play the defensive role, we lose the three point shooting on the other end of the same court. In other words, were it Posey, instead, filling that role, we would still have the three point shooter AND the defender. You might say, "well, bring in the three point shooter also." OK, but that player displaces somebody else with skills who was on the Court.
Second discussion point: take Cleveland for example. I strongly believe that one of the reasons we beat them (besides pp) is that many of their players not named LaBron are role players. Take their front line of Ilgauskis, Wallace, Sideshow Bob, and Joe Smith. Ilgauskis and Joe Smith help offensively but hurt defensively. Sideshow Bob and Wallace the opposite. From my point of view, I watched the Celtics pick apart these guys respective weaknesses because the Celtics on the Court were, in general, better rounded players with superior skill sets in many areas, while not being deficient in those skills where they were weaker. This is the way NBA playoff basketball is moving in my opinion - towards well-rounded players in general who may or may not have specific skills where they excel. Just like Rondo's offensive weakness was a constant target for exploitation, so too would Matt Barnes. Posey, not so much.
Third discussion point: The extreme example. If you could combine (for example) Korver's shooting, Iggy's slashing, and Cassell's short man, post-up game. That would be one hell of an offensive player. Probably top 10 in the NBA. However, if you play these same players as a starting unit, you have a perennial-cellar dweller.