So they are doing policy cards that you unlock and swap for bonuses. Get out my head, Firaxis.
Can't wait until some awful type of government becomes the most optimal because of deck slots.
That is my Concern as well but is the trade off for having lots of choices and customization. They can't possibly balance everything. The hope is these things gets balanced and tweaked post release and in expansions. That's always been the CivExperience (TM)