Well, I have a Ruel, but I'm not sure I have a good team to support her. Really the only solid sub I have for her is Kaede; I suppose I could make a row team with Awoken Perseus and, like, 2 attacker grodins, but seems kinda cheesy and wouldn't give me many dark/wood makers. I guess I could inherit a bunch of board changers (Zuoh, Gronia, Karin), but that seems inefficient. Also, my offensive awakenings will be all over the place. On the other hand, it is a lot of unbindable cards and plenty of SBR.
I think you'd be surprised by how many useful Wood Attackers there are. I know I was. I'd focus on a TPA heavy team. Keep in mind Ruel's 5 cooldown active gives her enough to activate. This means haste stacking can be super beneficial in dealing consistent damage.
Kaede, Vishnu, Revo MeiMei, Awoken Perseus (He's TPA focused, makes darks out of poison/jammers).
The thing Ruel misses vs Dathena is a delay. Green's delay options aren't great. Xmas Alraune, Woodbahn, and Wee Jas are all that come to mind (let me know if there's more).
I think we'll see a similar "optimal" team for Ruel like Dathena, minus the 3k2 spot since Ma Chao removes dark.
Probably something like
Ruel (Delay)
Revo MeiMei (Shield)
Revo MeiMei (Facet)
Revo MeiMei (Fujin-like)
Awoken Perseus (Armored Batman/Zuoh/Romia/Lumiel)
Ruel (Shield)
Lots of 7c awakenings, Hastes on all base actives but Ruel, Inherits to cover Arena threats. Revo MeiMei can be replaced by Vishnu/Kaede since Perseus should always be able to clean the board.