I'd be fine with a Hippogriff/Trollercoaster-style kiddie coaster. That's a small enough addition that I really don't see it being a 1 for 1 choice against a new dark ride or something, in terms of construction, price, land, etc. Seems like it would be it's own addition and really cement Epic as Florida's GP Coaster Capital.
Also, currently we have about 4 Dark Rides to 5 Coasters. Werewolf was designed pretty late in the process and Starfall counts as 2, so overall the balance still seems relatively even. I'd definitely love more Dark Rides myself, but it's not a massive gap between the two ride types.