As a new owner of an Overgoat, two significant benefits have presented themselves:
[ul][li]The obvious: Watchful score goes much higher. Mandatory for things like increasing SotC if that’s what you want to do, and useful for Watchful-scaling checks like The Mechanics Of Progress card.
[/li][li]I consistently get Storm-Threnodies & Bazaar Permits from the 8-action card option. With the goat’s Watchful boost, I get a 50ish percent chance and a single second chance gives two tries. Storm-Threnodies are grind-able through other methods, but they’re a pain.[/li][/ul] Bonus, which doesn’t apply to me (since I own a Bifurcated Owl):
[ul][li]Max Companion BDR without Fate (+2). You can also go to Polythreme to get an Unfinished Hat, mind you, which is easier now that zailing is easier.
[/li][/ul]Once I get the chance, I’m gonna grind for the Ubergoat so I can 100% the 3-supply Expedition check (plus more SotC). (An Extraordinary Mind or Watchful Destiny owner would probably make do with just an Overgoat.)
One reason I’m very pleased with my Overgoat is that I never sold anything I regretted selling. If anything, I was excessively cautious about that. If you’re not sure it’s worth liquidating all your possessions to get an Overgoat, then definitely don’t do it.