As an Eagles fan for the 25 years of my life, if Andy Reid is brought back, I am switching teams. Absolutely.
I, for one, hated, HATED Juan Castillo being anointed defensive coordinator but this year when he was fired, it was the offense struggling, not the defense. But Andy Reid felt the pressure and did something drastic. Andy Reid is the root of all problems. He has control over scouting, player development, coaching staff, etc. If Andy Reid were brought back in Philly, the only way that I personally would welcome/accept it is if he is strictly offensive coordinator or QB coach; nothing more.
And my hatred for him having too much power absolutely stems from him having overarching control of scouting and drafting. I will never forgive Andy Reid for passing on both Jason Pierre-Paul AND Earl Thomas, to trade up for Brandon Graham who has been the Philly bust of all busts (beyond Bunkley, Justice, & Patterson).