True I guess seeing all the kids would probably be nice, it's just that thanks to just breed town 2 alone, Brandon made about 122 kids (787 if we count breeding the succubus to max as well and that event is canon) So I think it would be difficult to have that many kids on screen, unless it's like a cutaway gag or something.
Unless you do mean more about showing what kids we made in breedtown 4 specifically, which is more doable. But a part of me do feel like actually showing the kids might feel out of place for the series, given they were never showed before, and Brandon makes it pretty clear he never really care about any of the kids he make.
And I do think the breeding appeal in this series is more about the big pregnant bellies and big numbers, not really about the kids themselves.