Is the cost and impact of this journey less than all the benefits gained?
The actual impact is that we would no longer have all our Darkcoin vulnerable to the 'security' of 3 servers.
Evan is going the right way I think with the block reward structure, and assuming InstanTX works reliably dependence on miners is going to diminish greatly, but as long as blocks can be generated by centralised pools the coin remains intrinsically insecure.
The cost of my proposed solution is a rewrite of the p2pool code to make sure it can cope with the demands placed upon it and to include privkeys for each p2pool node, with a corresponding check on the Masternode side. Whatever that cost is, within reason, it's worth it IMO to have an actually decentralised consensus system with no easily targeted centralised points of failure.
What are your DRK going to be worth if those 3 servers ever get compromised? Bugger all, very quickly, I think.
Remember not too long ago when the whole PSN got taken down for weeks by a few script kiddies from 4chan? Do you really think a serious adversary is going to struggle with a few shitty mpos servers? Assuming some unpleasant people don't just come physically knocking at the door.