I think that special_flags could be shared for all the blits in the
list. I can't think of a case where I would want to use different flags
Yeah, I think you may be right. When I've used it (for particles as an example) it was for everything in a Group. I searched through some code online and found a few uses where it was used in Sprites. But then all of those Sprites were rendered the same. There's some sort of nice symmetry by using the same arguments with blit, and blits however.