@Kakmakr
You spotted the incentive [ DO NOT POST SESC LINKS ]yourself in the "Lightning in 2020" thread[/url]
Although I disagree with the original observation (not your own) that Lightning-routing full nodes can profit, I think it'll only ever be a way to subsidise the costs of running a publicly accessible full node.
Nope, the thing that made me think about this, was a Reddit topic under /r/Bitcoin where Node operators were discussing Nodes and what bandwidth they were using and one guy said that running a Node is a thankless/unappreciative job. It stuck with me, while a was typing a response to something that was said about Freebitco.in Lottery and then the light came on.
Why not introduce a Weekly Lottery, similar to the one hosted by Freebitco.in, where you have 10 different prizes and the highest price going to one lucky Full Node operator and the rest of the prizes, going to the participants. <This way, both parties are incentivized to participate>
I think it can work, but I lack the knowledge to do it, hence the suggestion here. ^smile^