linedef action 401 has no option for keeping the ceiling flat unchanged

Linedef type 401, Set Tagged Sector's Ceiling Height/Texture is an action that when used will change the ceiling height and the texture. Its counterpart is Linedef type 400, Set Tagged Sector's Floor Height/Texture, and it can change the floor height and optionally the texture too.

Where the problem comes in is that a mapper may want to use 401 to change a few things and use the action on multiple sectors that have different ceiling textures, but not want to change the ceiling texture. One could argue "Just apply the same ceiling texture on the control sector", or "use multiple control sectors", and technically that would work, but it's inefficient.