TheScruple

@Mattmba:

Plasma Shield vs. Taunt comes down to your playstyle, grouping or soloing. If you solo exclusively, and can choose not to fight enemies without status effects, or only disorients (Tsoo, Warriors, Outcasts, Trolls), Plasma Shield is not necessary until the 20's. If you have followed the build guide so far, and have Boxing, you could take Tough at 16 to increase your Smashing/Lethal resistance. If you group a lot, and are expected to protect the squishies, and not just contribute damage, take Taunt. There is a strong community of anti-Taunt tanks in the forums, but Taunt is a great tool for aggro management and is almost mandatory in large groups and pickup teams.

To sum up:
If soloing, take Tough or Plasma Shield at 16, depending on planned enemy groups.
If grouping, take Taunt.

@Doc_Silver:
My plan for 41-49:
41: Weave. I have a pretty defensive build, but I've put off Weave in favor of Hasten, so Healing Flames, Consume, Burn, and my attacks cycle faster. This will get 6-slotted, with the extra slot at 43 going into Blazing Aura.
44: Firey Embrace. I already have taken GFS, Incinerate, and FSC. Firey Embrace will help greatly with damage output, so I can take down those pesky Psionic damagers and Sappers faster. Slots from 45 and 46 will be split between this and other powers.
47: Conserve Power. I don't have too bad of endurance issues with 6-slotted Stamina and Consume, but there are times when I'm cycling attacks and need a little help on endurance. Will be 6-slotted for convenience.
49: Rise of the Phoenix. Eh, might as well. No slots in this one.

If you already have Weave, I'd bump CP up to 41, and take Incinerate at 47. The faster psionic enemies and sappers drop, the more alive you will be.

@HaloInc:
I took Combustion at 10 and respecced it out at 24. It was really endurance-sapping and frivolous before 18, and becomes obsolete once you have Burn. If you have FSC, you don't need Combustion.

After spending most of my post-respec (level 24) time in Terra Volta, I can say with great confidence that Sky Raider Captain groups go up to 29.

There is one U-shaped warehouse in particular where they spawn all around, and at both ends of the U, they fight with Freak Tanks. Should be in the Savage Waste Disposal area of the zone, if my memory serves me right.

On a side note, the level they spawn at seems to depend on who else is in the area, the spawns went from 29 to 27 after a level 26 Spines scrapper infringed upon my hunting territory. If you, the level 29 fire tank, are alone in the area, you should have no trouble finding some nice fleshy groups of Sky Raider Captains, ripe for burnination.

This game is awesome.
This thread is also awesome.
So awesome in fact that I am going to actually post something.

THANK YOU DEVS!!!