I agree with Isaac - I tend to like leaning more heavily into Babylonians with some animals as well.
For what it's worth, my Flood deck ran mostly Babs with a few animals. The nats version had Babylonian unity in main deck with two animals in Reserve (Behemoth and Serpent). Since I was focusing on getting Ark right away, the two in reserve let me run Two By Two and make sure that even if I got Ark before I found it, it would still have a target. That said, I think it was worth it to focus on Babs because Merchants is insanely good, especially if you can get it right away (oh hi Darkness soul), and the fact that Noah can get them from either deck or discard for the low low price of any crimson card makes them a constant threat. Combine this with Siege Army and Nergal (especially with PoC's Siezed by Babylon) for power and Nebby (especially with Betrayal) for speed, and Babs have a very consistent and powerful package.
I was pretty impressed by the Nebby to Great Fish play that JD ran, so I'm trying it in a similar version of the deck now. Jury's still out on if it's worth it or not, though if it is I think that it would be correct to run a Leviathan as well, making it truly a crimson splash.
