I think it would be a good idea to be able to turn on/off the new grid feature, as it really complicates things, when you have setup a website with for example automatic.css and have all grids already done, this feature somehow overrides automatic.css grid, especially noticeable, if the clients wants to change the amount of grids being displayed .... this new feature is awesome, when you start with new website, but kinda sucks, when updating an existing site.