The only difference that I see on your proposal with the current system is the removal of downvotes. In the current system if you setup several alt-accounts and only vote on them you are essentially paying yourself your share of the reward pool. With "Individual Reward Pools" the incentive shifts from farming with posts to farming with stake without providing any useful work in exchange to the network.
Downvoting stops (or rather mitigates) none useful farming of the reward pool. Removing it institutionalizes self-vote farming by converting it to farming by staking...the network would feel a lot more ponzi-esc (if that is even a word).
I am not saying that removing the reward pool would be a bad thing in and of itself but something of value has to be given to the network in exchange for a portion of the block rewards.