Important question. It is understandable for witnesses to submit proposals, everyone needs money, particularly now.
HOWEVER, if the price of HIVE goes up a lot (distant future), witness earnings should cover expenses of running a full node and much more. A witness should not need an incentive to work for the HIVE blockchain, his stake and witness earnings ARE the incentive.
The SPS should instead be used for developers in the community that are not witnesses (or outside of the top 20). A great example of that was the proposal from @inertia to help with the documentation in the Steem API.
Your own proposals as well were great, before @steempress became a top 20 witness. I understand that at these prices witness earnings amount to nothing with the node costs, but this should be kept in mind for later.
I am all for non-witnesses getting fudned, don't get me wrong, it's just that with the way stake is set-up there is a higher chance for witness or well known community members (like inertia) to get funded
Yes, I agree with that.