It beggars belief that F1 have to always make the simple things overly complicated. It is claimed that it is a money saving measure, but this it garbage. Why not simply state the displacement, ers, maximum power output etc of the engines/power units and let the manufacturers manufacture. The cost of the engines will not rise because most teams are customers and have limited budgets. The best era (imo) was in the 70's - mid 80's. Engine development was allowed but wasn't really done to any great degree, there weren't too may draconian rules