This is stupid, it's never going to get 50+ and both Leaf and Ethlin already have Critical. I think Pursuit Ring on Leaf is fine but not necessarily the best option when there's other scrubs in Gen 1 who can make use of the Pursuit Ring. Light Sword might be best to keep around too, ranged swords are fun. Leaf has A swords so he can use just about anything you want him to. He doesn't necessarily need range in Ch7.
There is no question that Levin x Tiltyu is the way to go in ranked over Levin x Fury. For one, it makes it a lot easier to get Arthur to L30, whereas Sety needs no help whatsoever since he comes at a high level and could practically get to L30 on arena and staves alone. Secondly, this way you benefit from Holsety for longer overall. Third, by the time Sety joins, Arthur will probably be promoted and be completely superior to Sety thanks to his mount. Not being able to ORKO without a Pursuit Ring isn't even such a big deal when you don't always want to, and Balcerak is fiddling with the RNG anyways so he can make use of those extremely high rate Continue and Critical procs.
Paperblade did Ardan/Sylvia and Lex/Brigid which I think is the right choice. Both Patty and Leen are hopeless cases, but Faval definitely benefits from Elite more than Corple does overall. Holyn/Ayra would be my preference over Noish/Ayra but both should work out. Midir/Aideen is simply the best pairing possible for her. Claude/Fury is what Paperblade did...I really prefer Noish, but on the other hand, extra staff level for Fee is great for ranked.
Gonna watch the vids now.