Mixed 8.0 and 9.0 should be limited to 4.0's and 4.5's respectively.
I've watched several Mixed 8.0 matches and have observed that matches with four 4.0 players tend to be competitive and entertaining to watch.
Whereas, Mixed 8.0 with a 4.5 man and a 3.5 woman tend to be lopsided and involves hitting at the 3.5 woman and keeping it away from the 4.5 man.
I don't see the rationale for allowing it... Why allow a 4.5 to partner with a 3.5 in Mixed but not allow a 4.5/3.5 to partner
in Men's League 4.0 matches?