Blast from the past. M113 Fire Support Vehicle.

Transport Infantry to the area of the objective.  Allow them to assault on foot.  Use armor to provide supporting fires while the grunts assault the objective.That is the real function of armored personnel carriers.  

Infantry fighting vehicles, with the idea of allowing the infantry to ride to the objective while assaulting it from inside vehicles is as dead as disco.  The very idea is a remnant of cold war, atomic war thinking.   Check out the pics below of the  M-113 FSV.  One of the first vehicles to get it right (the others were the LVT-(A)4 and later the LVTH-6).