BUSINESS RATES FOR SMALL BUSINESSES #KEEPTRADELOCAL

I'm a big supporter of small businesses and 'keep trade local' approach. It keeps our high streets and employment versatile. While we have small changes in the Localism bill to vary some elements of business rates - wouldn't it be great to devolve the power to set rates to local councils in entirety - allowing micro business (>9 employees eg) to have much lower rates than the huge conglomerates such as supermarkets which march in and push smaller places out of the market? You've discussed different rates for small businesses in the past - what chances are there of achieving something like this?