Clearly ..
.. if (you) don't like rep decay, stick to the bulletin boards .. could be the mantra?
edit:
I agree .. I don't like that the PP pages right now are mostly about explaining the rules, would much rather see a more character driven page. I think that will come though, it's a new feature and for me the way it's structured opens a deal of possibilities.
One thing that springs to mind is if all rep decays then bulletin boards wouldnt help as doing missions gets you the magical decaying rep. I proposed when PP was in beta to go to FFEs model and failed missions hurt your rep more than completed missions this gives an inventive. Unfortunately they chose decay over failure.