Pique makes way too many individual errors for a normal CB, that even if you shield him with 6 defensive midfielders he would still make and cause us to concede goals
Since when? I don't think you understand how a defense works in reality. When our system was organized and we had pressing + a fit Puyol/Abidal, our backline wasn't spread too thin and Pique performed well. Even early on this season when Tata got us pressing again, Pique performed very well. You can only ask a defender to perform if he's in a stable environment to do so. Right now he has non-defender Alves on his right, Alba also not being a great defensive fullback, Busquets in dire defensive form, Mascherano who runs up to tackle anything, and the entire team not pressing like they should for our high line.
Pique is by no means the perfect CB, but to crucify him for errors caused by a fragile defensive system is misguided. When Man City's defensive system breaks down, Kompany becomes clueless and makes plenty of errors. Same for Ramos/Pepe at Madrid, Koscielny at Arsenal, even sometimes Dante for Bayern. It's basic common sense here. Pique's struggled with inconsistency too much to be called world class, but if he was in a proper environment he'd do well and his flaws would be minimized.