If they are truely deserving. I quit playing PLD awhile ago because all I got were these horrible parties, I did my job, no one else did theirs, as my job was taking the beating I died first. So logically I dropped it.
Now, ever since then I realized I hate tanks that aren't me. But, what I did wasn't really special, in fact, I had a clock work pattern.
-Wait for TASA as needed
-Provoke
-Shield bash or sentinel (alternate between battles)
-Get beat up a little bit (at least lose 200 life)
-Flash
-higher tier cure spell
-provoke
-use flash to provide a safe haven for casting bigger cure spells
Or if I had 300TP I would gain the mobs attention with flash so that I can maintain my full or near full health and stick it with Spirits Within.
Also, after the initial provoke I never moved unless it was to cover someone. Even then I advised people it would be easier for them (if they thought they would take hate) to move behind me for cover.
Beyond that, if you don't have flash up and need to cure, start your spell once a mob hits you, that you utilize their attack delay to get your spell in.
Now of course there are times when a tank needs to give hate up, and that's all well and good but, how can you give up something you don't control.
Over the last few days I've partied with a lot of tanks that aren't me and I gotta say, "What the ****!" What I just mentioned is a pretty solid PLD strategy that anyone could mimic, and it works, it godamn works miracles. I've partied with RNG (prepatch) who after the first fight or two check me and say stuff like, "I don't know what you are doing differently then other tanks but it works." Then they would try to take hate from me, only to be /shocked when they would recieve a /ja "Cover". When I played the job, I didn't think I was doing anything special, I thought I was just doing my job. But when I party with these awful PLD that can't even hold hate with a fight starting with a good 700-900 WS chained to distortion being put on them at the start of the fight it makes me think maybe I was great. Or when I watch so many tanks get the jitters and start runnin' all over the place.
For the love of god, tell your tanks they suck. Tell them to utilize their ******* of abilities to do their job properly. Otherwise I would seriously just replace them or disband. Later on if the tank isn't doing their job all the mob needs is a few seconds with a BLM and their down and out.
This whole thing could go a lot of ways for a lot of jobs. Like RDM that just cast refresh. One of the best parties I was ever in had no RDM or BRD. Valley of Sorrows, hitting chain 6 pretty consistantly with perytons and raptors. Clearly refresh is not needed (unfortunatly I don't remember the exact setup. I think it was WHM, BLM, RNG, RNG, SMN, PLD).
People really need to be more willing to tell someone they suck at playing a job, I mean people are so quick to assume DRG sucks and will gimp xp, but they will allow crappy tanks and RDM to do whatever (or not do whatever) they feel like.
If everyone was a little more judgmental the game would become a better place. Now I'm sure you'd get a lot of, "***** YOU NOOBZORZ I ARE TEH LEETZ WELCOME TO BLIST TOWN POPULATION J00!" Well that's fine, I wouldn't want to party with them agian. But once everyone is willing to tell them they suck maybe they will take the hint when they've Blisted ALL the people in their level range and are in turn blisted by half the server. Logically even they would realize maybe they do suck and they need to refine (or create) a strat.
Now, I'm not literally asking you to say, "HEY MAN! YOU SUCK!" Maybe more of a, "I think I could help you do better with ___ if you would just listen to my advice." Although advice has realistic limits. When someone's gear is a crime against god, there is a monetary limit which you can suggest (certain things are too pricy to be considered practical by average Joe). But things like when to use certain abilities, better macros, even better food options should be offered.
*Jumps on his Karma wagon* TO THE RIVER STYX!