Yesterday I just went into Sastasha for the first time on my 16 GLA and have to say I had a fun time as a tank. Enmity seems to be a lot more straightforward in FFXIV than other games I've played. The party I had worked well together. The ARC and PUG I was with watched the enmity gauge on the mob they were fighting and noticed that it was going up, they either completely laid off or switched to another mob. The ARC was a bit more guilty of pulling aggro from mobs I was not directly attacking, but after a couple of times of him almost dying, he got the hint to hit them correctly. The PUG was excellent, I usually kept aggro with him and me, sometimes he would take it but nothing a Shield Lob or Flash wouldn't fix, which was really nice. They were all 18 and me 16, too. I was incredibly nervous but it all turned out OK. I'm sure I'll run into my fair share of idiots but my first time wasn't too bad