Feraligatr can't wait for Swimming Goggles so it can finally stop being Gyarados Lite. Swords Dance Aqua Tail, plus Gyara can't do much on the special side at base 60 whereas 79 is good enough when Hydro Pump, Blizzard, and Focus Blast are accurate moves.
Too bad my own in-game Feraligatr has awful Special Attack (24/31/27/0-4/31/31, didn't even bother checking exact SA since in fourth-gen it didn't matter), but at least she'll still be able to do Swords Dance Aqua Tail, Ice Punch, and whatever else I decide to use instead of having to Dragon Dance for them.