What is your favorite career, or combination of specs give that hermit archetype the right flavor?

Besides Hermit? Or in addition to Hermit?There are a massive number of cool combinations, but I'll give a couple of my favourites.

Hermit/Pathfinder is obvious, for around 250 earned xp you can Bond with a silhouette 2 mount, AWESOME! But your also able to move quickly, your tough and with a FR of 4 your Force Power options are wide open. Heal/Harm, Foresee, Farsight and Sense are all very fitting.

Hermit/Shien is great too. Your the Cunning survivor, your leaving the galaxy behind and surviving on your own wits, and nothing is going to stop you.

Hermit/Seer is another great choice, so much knowledge, so much Discipline, so much Force! Your extremely in tune with the world around you, feeling everything move, seeing everything before it happens. Without any Dedication your probably going to need Enhance, then some way to protect yourself, Move, Bind, Protect/Unleash are all great.

Hermit/Sentry is a surprising yet awesome combination, a decent Brawn, Cunning and Willpower make for a frightening build. Throwing that Saber Pike (spear) off the back of your Bonded pet Acklay sure will get most of the kids off your lawn.

Those are my four favourites, but basically anything not related to technology works, Racer, Armourer, Artisan (unless your brewing potions I suppose) or Starfighter Ace are bad choices. Social is probably less important too, unless it's Coercion!

Really depends on what flavor of Hermit you're trying to create, as there's not just one kind of character that lives in solitude. I like the idea of a Hermit/Sage, representing the guru on the mountain or the last Keeper of an archive. Lives in isolation, but occasionally dispenses wisdom to supplicants, hiding a surprising degree of power. If they take on an apprentice or a student, then I imagine the Teacher spec from the upcoming book would suit as well.

Think less teacher, more stranded exile turned co temptation in isolation. Character is ex imperial assassin turned nice guy trying to atone.

In that case, Shadow/Hermit might work well. Or, if you're set on a Conflict tree, Sentry/Hermit.

Sentry Hermit is definitely a good choice.