RO water filters do not need to be adjacent to their faucet. I had planned in this kitchen to use the cabinet shown as open as a pullout trash and have a dead corner. Then I realized that I can move the RO filter and storage container into the corner of a cabinet like that shown, freeing up space under the sink. Maybe then I could use the sink cabinet for a trash pullout. We have a 10" deep stainless sink with the garbage disposal pushed into the back left corner. Thoughts?