Sure it can work, but would it be preferable if it no longer was as good as a unit of account?

I like proof-of-stake coins, but I liken them more to shares of a company. I see DPOS systems similarly and it has a great system of getting more distributed over time as more stakeholders get involved. Can these coins eventually be used as money? Perhaps. A lot of it might depend on how people feel about using these coins as a unit of account.

Also distribution is always a difficult issue with POS ecosystems compared to POW systems, but that's another topic to discuss.

We'll see what the free market thinks!