
I grok do u |
High guardian fighter, Guiding blade swashbuckler, Sixth wing bulwark warpriest, Honor guard cavalier, Ulfen guard PrC, sacred sentinel PrC, and I suppose sensei monk could be used. Warpriest blessings, cleric domains, and cavalier/samurai orders have several good options for team support.
Skalds, barbarians, fighters, monks, and brawlers all have general abilities that can make a good gestalt. Heavier armor and shields, or have some good combat maneuvers like grapple or trip that hurt their ability to attack allies.

Reksew_Trebla |
There's the Sentinel from Spheres of Might. It's a real tank.
Thank you for the suggestion, but the GM isn't using Spheres. I also don't know the first thing about it, so I doubt I could convince them to incorporate it.
High guardian fighter, Guiding blade swashbuckler, Sixth wing bulwark warpriest, Honor guard cavalier, Ulfen guard PrC, sacred sentinel PrC, and I suppose sensei monk could be used. Warpriest blessings, cleric domains, and cavalier/samurai orders have several good options for team support.
Skalds, barbarians, fighters, monks, and brawlers all have general abilities that can make a good gestalt. Heavier armor and shields, or have some good combat maneuvers like grapple or trip that hurt their ability to attack allies.
I like a lot of this. I don't think I want to lock in worship of either Ragathiel or Torag though, and I'm also unsure about being of Ulfen descent, Sixth Wing Bulwark Warpriest, Sacred Sentinel, and maybe Ulfen Guard are probably not going to be used.
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I'm thinking of either using Yojimbo Samurai or Honor Guard Cavalier, along with Witch-Watcher Witch for occasional support with spells. I'm leaning towards Yojimbo, so I can take Unconquerable Resolve several times, and with the ability to use my Resolve on my ward, I can stay afloat much longer. With Witch-Watcher, I can give temporary hit points to my ward as well, so we'll both stay up longer.

Reksew_Trebla |
Update.
I'm now thinking between the following:
Option 1: Samurai (Yojimbo) X//Witch (Witch-Watcher) X-4/Fighter (High Guardian) 4, with Order of the Guard, and taking Unconquerable Resolve as much as possible. I'll spend at least one feat on either Combat Reflexes or Stand Still (High Guardian gives CR as a bonus feat, or SS as a bonus feat if I already have CR).
Option 2: Cavalier (Honor Guard) X//Fighter (High Guardian) X-10/Ulfen Guard 10, with Order of the Guard, and taking Stand Still.
Option 3: Samurai (Yojimbo) X//Ranger (Witchguard) X, with a similar plan to the first option, except I'll have to spend another feat to get both Combat Reflexes and Stand Still.
Anyone have any advice on which option I should take? There are probably other combinations of these 5 classes that could be good in a Gestalt, so if I missed an obvious one, please let me know.