• Unless you mean good to include good for advancing the discussion but I didn't get that impression

Advancing the discussion was the purpose of the rules I tried to forward. See this statement: "A faulty line of argument provides opportunity for rebuttal, and so for our test has value even then; that is, I want some faulty lines of argument here"

After all, there may be a non-obvious counterargument to the obvious counterargument. A faulty line of argument may be a good line of argument wrapped in unnecessary faulty logic or assumptions.