exe should add stake, that's what is most popular right now. i like the pow/pos hybrids such as hobonickels. they don't have huge hashrates and survive with stable prices. if exe were to shift it would be one of the only to use scrypt-n. just an idea.
hmmm, ps is just the latest flavor of p&d, we don't want that, slow and steady growth and merchant adoption is the key, people will start getting sick of loosing money and start supporting good coins(hopefully)
pump and dump maybe on the latest pos only coins with short mining window. but those were not what i was talking about.