Too many CBs ? Where do you get that stat from ? We've got Perry, Davies, Thomas, Lancashire and Svensson. All are experienced at Prem/CCC level. Lancashire has never played a single minute of league football and is injured (again), as is Davies. Svensson hasn't played any league football for well over 2 seasons. Wotton would be the next in line in an emergency but hasn't played CB very often in the CCC.
If the last 2 seasons have shown us anything it's that you need 5 or 6 players capable of playing CB. There will inevitably be times when we have 2 or 3 missing through injury and suspension at one time. I recall a couple of games in the Premiership when we had to resort to playing Dodd and Benali at CB because all our recognised CBs were injured or suspended.