Wolf should be more impactful and be as interactive as Lamb.
The concept(s) here is just a quick written idea but the mechanics I would love Kindred to have should be somewhat similar. The numbers can be tweaked for sure.
Point 1: Instead of a three shot after Lamb's dash, Lamb should shoot an empowered damaging arrow that marks the target for Wolf. So you dash then autoattack for the mark.
Kindred's Q should have Wolf attack the nearest marked enemy X amount of times; sticking to the same target until Wolf returns. X is equal to the number of attackable units enemies, monsters, pets, wards, teemo shrooms etc. surrounding the target (210 range). Each Wolf attack does 100% of Lamb's AD, benefits from attack speed and can crit, similarly. Lamb now deals 80% of her AD and cannot crit for the duration that Wolf is attacking as long as this ability causes it. Cooldown increased to 13 seconds from 9 seconds. Cooldown is reduced to 9 once Wolf has unleashed all attacks. If the target dies before all Wolf attacks are spent then Wolf unleashes the remaining attacks on any nearby enemy (300 range.) Any other abilities used during Wolf attacking because of this ability replaces the next attack(s) that Wolf would do.
Point 2: It would have been really cool if Wolf shared the health bar feature when he's attacking, something like. *Wolf borrows 30% of Lamb's maximum health as well as gaining 20% innate lifesteal for himself only. If Wolf 'dies' he can't be used for Y amount of seconds. This could be used in a way that if Lamb "dies" whilst Wolf is attack, Wolf can transfer his health back to Lamb and "revive" Lamb. Then he proceeds to swirl around her. * This could be put somewhere in Kindred's kit.
Point 3: Right now it seems like Lamb is the main feature, it doesn't seem like a 50/50 split of work. Especially because Lamb is the one that has the health bar atop her head so people will focus on her more in teamfights. It's like Azir and his soldiers. No one will be able to interact with Wolf because you can't hurt him. So the idea of them working together is there but the idea that they are one and the same champion isn't.
Point 4: The name of the ultimate should be changed so that it doesn't seem like Lamb casts the spell. Kindred (Lamb and Wolf) should cast this spell. Don't call it "Lamb's Respite." It's the ultimate so it should account both Lamb and Wolf in its name and animations.
I really hope that Wolf is not just another Azir soldier when Kindred comes out. I would love for him to be attackable in anyway as well.
I'm posting this now because it would be easier for Riot to make changes before a champion comes out in live.
EDIT: I do love the champion. It's just that I feel like Wolf should do more and should also be more. I'm also keeping in mind that Kindred is already somewhat finished in design so I don't want to conjure up any animation changes that are too big to create. If this idea was implemented that is.
EDIT: Shadowfire is perfect.