There are a few threads going on over at r/Bitcoin about incentivizing nodes that might be of interest to people here. Dash has been mentioned in both of them.
'The other problem is that it's not easy to set a bandwidth rate limit. I believe that more people would run nodes if the Bitcoin client just ran unobtrusively and reliably in the background, consuming no more than about 100GB of bandwidth per month by default. '
Thanks for linking. This one is on the front page of r/Bitcoin as well. People are trying to figure out answers to problems that Dash has already solved.