I need a grid and also guides within the liquify filter. I am editing a lot of 360*180 degree spherical panoramas. To get the horizon totally straight, I use the liquify tool. The horizon has to be exactly in the middle. A grid, or at least a guide would be very useful for my work. Currently none of these options are available in the liquify tool. But grid and guide are readily available for example in the puppet warp - it is also useful but not as precise as the liquify. Could you please make grids and guides available in the liquify tool?