Kay, the first problem that I see is your use of Scaredy Cat. In my opinion, while it's a useful ring, you don't need it to survive. If anything, you WANT the mobs to hit you, so you can heal yourself.
Using Wish for your crew should only be used at the beginning, so you can gain that initial starting aggro from mobs. Otherwise, I would only take Bandage and Diagnose for heals. If you toggle enough, and consistently rage Bandage r2-r4, you should be able to hold a room's aggro well enough, as long as no one amps without you amping as well.
If anything, when you do Tank, take an attack like Hot Foot, Shuriken, or Solar, so that you can aggro the mobs immediately and begin gaining aggro. Do you get put to "sleep" a lot by the Vampires? If you do, what's the current status of your Willpower Ghi boost? Also, what CL is your Iron?
I like that you use Integ+Fitness, at least mainly for the stam regen.
Only thing that I can suggest for NF, is that you save 1-2 mobs (2 Vamps, 2 wolfs, a vamp and a wolf, etc) for yourself. While they keep hitting you, you keep toggling and healing yerself. You then have your crewmates begin attacking the NF. Tell them to attack to about 50 or so stamina, then stop attacking and let their stamina regen. If they must kneel, they must do it sparingly, or they could potentially steal your aggro before you can hold it long enough. Using this method, I can guarantee that the NF will fall without a hitch, if people follow this method correctly.
You can mess around with how much stam you want them to use, but 25-50 as a limit is quite a good number.
I hope this helps. :3 Good luck with Tanking!