its a hard thing being a nin/drk, especially in my situation. i said it a thousand times, i have the utmost respect for anyone no matter what gear they have, as long as they put in effort... and the sad truth is, nin/drk is one of those jobs you cant half ass, it only makes the rest of us look bad upon initial impression of others. Ppl think i got it good, because they see SS"s of me tanking everything, but i had to work for that kind of trust lol. For me to be picked over 2 other aegis to tank something like Odin, or ixion, or whatever, doesnt come from me getting on ppl's asses to let me tank. If anything, im the one usually asking to go DD instead, but when actions speak louder than words, i gotta man up and keep doing what i know EVERYONE here is capable of doing. Im not a genious. Im not special by any means, all the gear i have can be earned 1 way or another. So keep doing a good job on nin. Show wapa what your capable of, im really happy to see you others stepping it up as well RDM or NIN.
as far as def goes, if you read my FFXIah thingy, i am working on denali hands atm, ill get em eventually. Nyzul to me never struck me as something interesting. All the gear there sucks ass, compared to what i normally have, so i never really had the motivation to go in... but ehhh now i do. Ill get the greaves eventually as well, but i need to get my buddy to craft those for me lol. But i honestly dont mind what i have. If its gotten me this far, than im ok with it. I still get'r done
Another good peice of gear i found were the storm head peice's from assult. it has MDB+2 and nin can wear. If i can -25% magic already, than the extra MDB would just be the icing on the cake. Im also revamping my Magic DEF gear to put more INT on it, since i found out MND kind of sucks on anything that isnt WHM nuke-based. Like Citadel buster, or Holy. Int would be better for things like AV's Aeorga IV and whatnot.

also sidenote: after reading some of my posts, i cant help but feel as if i sort of give out an anti-pld vibe. If so, i dont mean it, i got respect for all tanks in general. i just respect nin and rdm more because we dont have a 5 min sentinel macro and have NO room for mistakes. But regardless, like haka said, i trust pld more than i trust rdm as a co-tank to have my back in those "shit-hit-the-fan" moments because even if they have it easier than everyone else, they still get the job done just as well as we do in the end.
oh btw edit:
just to show the power of /rdm, we recently did an odin and i had to go nin, etc. My friend parsed this and if you never faught odin, He has shit DEF, sata is awesome on him and you can break 1k easy on any job, and enfeebles are generally hard to land. He has a move that silences and curses you and spams it CONSTANTLY after a certain % interrupting all yours casts. He also has a move that can dispel all your buffs completely. So i made a macro to eat a tav taco and echo drops, and just used my holy waters manually.
The way we do it, we have melee love and SMN love. Constant TP feeding on Odin so he will do nothing but interrupt you over and over with that silence/curse move and those spikes. Nothing we cant handle, we done it a million times. I go in for 1st aggro and dispel. I have a ghorn in my pty so MP isnt an issue. I can literally spam dispel and never run out of MP. The pld cannot spam anything but cures on himself with his HP macro, so he gets 90% of the sata's to keep up.
Now here's where it gets interesting, after 5 min, even with 1k SATA gekkos from Goldo the beast (if you dont know who he is, you betta ax' somebodeh') he was still glued on to me... ninjas are a GREAT fucking tank if you got the gear/motivation for it. If any of your pld friends mock it, show them this:

having over 70% of the hate and more shadows taken, i still took less overall dmg than the pld, while maintaining more hate. And this isnt your typical tank, this was a career pld. But we still have a lot to offer, its just up to other ppl whether they want to be open minded or not ! Ninja tanks unite!