There's a solution to that - either a system that limits fuel per lap, or a not-so-complex system that limits fuel flow rate. Couple that with a ban on any driver operated device that modifies the power output characteristics (adjustable rev limiters, fuel mappings, adjustable turbo pressure limits and this launch map bollocks) and you would have a good engineering test bed. With appropriate measures it could be compatible with cost control, by allowing independant teams to buy engines at a fixed cost ...