I read somewhere recently that the budget assigned to the design team for figures is done so on a $X for the entire wave of that class basis. So, for example, instead of there being an individual budget for Blackout and then another one for Grimlock they draw from the same pool.
If this is correct, im really enjoying how Hasbro are using it to give us significantly differently sized figures in a single size class to try and maintain scale with the SS line.