Add a magnetic mount for the 10cm mount from B10x, B1x etc. so it easy to add Filter, grids etc. to the flash. So it is possible to use gels with a softbox.
Make a thin border to not loose any light and that it is not bigger than 10cm.
During indoor event photography with my A1 where I need to use the CTO gel, I’m constantly moving from a space where I want to use the Softbounce to a space where I want to remove the Softbounce and bounce the strobe off a wall or ceiling. Problem is, the gel filter mounts on top of Softbounce, so I need to fumble to remove the Softbounce, then remove the gel filter and place it on the flash head, then do the opposite to switch back. I wish the gel filter could attach first to the flash head with the Softbounce on top of it so I could simply remove and replace the Softbounce without touching the filter.