i would very much like any idea to add incentives to run a node - for validating and submitting transactions and distributing old transactions or blocks.
Article discussing some of the problems and how not all nodes are alike:
1) Peter Todds Tree Chains may include ways to encourage decentralization 2) Justus Ranvier method of adding price discovery - http://bitcoinism.liberty.me/2015/02/09/economic-fallacies-and-the-block-size-limit-part-2-price-discovery/ 3) TBF - https://getaddr.bitnodes.io/nodes/incentive/ to pay nodes directly can be done on a larger scale 4) Multi-use VPS's could be created that were discounted or free and run full nodes for profit or non profit 5) 0.11 Prune node feature will add a different type of "full" node to secure the network 6) further optimizations within core to make nodes more inexpensive to run and operate(most of the cost is not disk space but bandwidth)
Anyone else is free to contribute more to this list.