I have always stressed that need in the private forum. Oversights still happen, and they always will.
The TalkBoard guidelines give a lot of flexibility to the TB President to devise ad hoc solutions to problems. This proposal makes one aspect of that flexibility more specific. Under this proposal all the Yes voters must agree to call the change minor. If you'll pardon the play on words, that's not a minor point.
Then I'm confused. Is the implicit plan to treat all "minor" changes, including typos, under the proposed friendly amendment rules or are we talking about different rules/procedures for handling the categories of (i) typos, (ii) minor changes, and (iii) friendly amendments, including situations where important logical implications were omitted from the motion?