I would argue that a rebuild is 'on the fly as you try to replace your core', a retool is ';changing up a piece or two of your core + changes on the fringes", and then there is a burn it to the ground rebuild.  That's the vocabulary that I go off of now after listening to Conroy speaking about the 'retool' early in the season.  However, that is my own interpretation.
		 
		
		
		
		
		
		
		
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