I've always found this fascination with a 3-CB formation bizarre. Most teams don't play with two strikers, so what is the other player there for? So that Torosidis can play out of position farther up the pitch? Greece needs *midfielders*, not more defenders...and as long as players like Tziolis get the start, removing pistons from your engine is only going to hurt you. There's a time and a place for it in an ad-hoc capacity, but it requires players to know how to play in it and with each other - frankly, I don't think our coach has the time or the skill to get our guys looking good in it.
If Kpaps (who I admit is one of my favorite players) wants to start, then he should prove he's good enough to get in over Sokratis or Manolas. Scoring a header or having an occasionally good game is not sufficient (although any mention of him on these forums automatically triggers the 3-5-2 crowd to come out).