such a massive change in powertrain configuration will, i'm convinced, undoubtedly effectively reset any mild competitive advantage any team enjoys under the current tech regs to zero. given the engines will be shorter, a bit lighter, but wider (turbos/intercoolers/associated pipework), and will also require substantially different cooling requirements with the obligatory complete redesign of the aerodynamics
the teams will literally have to make changes to every aspect of car to end up with something that works holistically and achieves the oft referenced balance that the drivers and engineers covet so much, and that in turn results in a championship capable whip
if we consider how much effect just changing from Honda to Mercedes powerplants and the resultant chassis changes had on the initial competetiveness of the debut Brawn GP team, it's not hard to imagine and even greater 'leveling of the playing field' at the outset of the reborn turbo era
but of course if Redbull just dominates the opening rounds of season 2014 anyway, feel free to disregard everything I've just said...