I see that CommaSeparatedIntegerField is being deprecated, but I don't see why. I know I'm apparently late to the discussion, but after it 16 months I don't see any actual reasoning.
I recognize that a CharField with the validator is functionally equivalent, but it takes a very handy field type and makes it completely inaccessible and invisible to new users.
Both links focus on the how rather than the why.
I disagree with the decision overall, but I'm more concerned that it just kind of slipped through without anyone really thinking about it.
(To be clear, I don't begrudge Tim Graham, he was right to propose it, but then there was no discussion on it at all that I saw)