Hey man.
Cool deck. Who doesn't like cats, right?
There are some really good options that you may already be aware of and have chosen not to include, but thought I'd share just in case.
Regal CaracalPride SovereignWhitemane LionThe first two just care about cats.
Whitemane Lion is a great utility piece. The
flash means you can use it to protect something important if it's going to get exiled or similar. It's one of the few creatures that do this kind of thing that can target itself so if you have something that cares about casting creature spells (Such as
Oketra's Monument) it can do a lot of work there, or you can use it to get a second go at some good ETB effects.
Just some food for thought.
Cool deck.