Honestly I believe some thing does need to change with gear and the duty finder.

Crafting/gathering gear should be limited to crafting/gathering jobs only, not equip able by any and all jobs. Same with the accessories only allow the relevant jobs to equip what is relevant to their job. L accessories that have a mind attribute only equip able by white Mage, scholar, and astro or strength accessories equipable by only monk, dragoon, and now Sam.

I've also seen too many people wearing incorrect gear and low level gear in high level content, they may make the minimum ilvl requirement but they do so at the cost of making the whole run way more difficult because thier defence/attack or both is not enough for them to survive which makes the run hell on a healer or their attack isn't enough to do much damage if any at all.