I'd like to see a lot of the core RPG mechanics brought back like elemental and damage type resistances/immunities, status effect resistances/immunities. And also maybe some gear bonuses that aren't just a static number bonus to a stat or substat such as improving certain skills, spells, or passives. Or things like the added effects we had on gear from FFXI. However at this point the likelyhood of it seems to be close to 0 as they appear to still be favoring the lazy minority of players and that implementing these things will require a few overhauls of systems and also at least a couple jobs.