Blend mode and potentially mesh resolution should be configurable parameters

[awgreenblatt]

At present, if I want to change the mesh resolution or multiply mode for an applied resolution, I need to edit the filter. I can't just add the filter and experiment with the mesh resolution or multiply mode. These should be configurable parameters in the left sidebar. I can definitely see where you could be able to set the default values for these in the filter configuration, but then you should be able to customize that in the left panel.