Eliminating is a much more severe approach as opposed to simply decreasing the inflation of steem that is going into the pool.
However gotta get RC delegation pools time to get up and running AND you need to see how well OTHER reward pools with different SMTs do. Maybe allowing tons of those to exist and trying tons of equations to the system will teach us if there is a system that works really nicely. No need right now to make drastic changes until we allow new system test the waters for a new and better direction to go.