I think the distinction is SO is probably better for language questions, where you want to know how some aspect of the language works, while SU is better for task questions, where you want to know how to perform some task (of small scope, not "write a program for me").

@KamilMaciorowski Unfortunately, that would have to be a SE change. And it will never happen: all edits must bump so vandalism can be detected. At least, that was the reasoning the last few times this was brought up. So, the only solution to edit flooding is to do it slowly, in batches. The idea of this extension is to make it easier to time those slow batches.

@allquixotic Eventually, yea. I'll probably copy this over to StackApps at some point. But it's easier to start (testing) in a small-ish community, I think.