I actually think some modicum of horizontal progression in XIV would help.
I'd at least like for old gear to be upgradable to match current new gear- like, an old relic weapon that you can enhance to the current ilv by doing current content.
This would give you many options for gear instead of the current "savage or tomestone" dichotomy we've had for ages.
Some people here are echoing that sentiment.
I also think there are some inoffensive traits gear could have, like adding an extra gapcloser charge or lower the cooldown of swiftcast by 10s in exchange for some raw stats.
I don't want them to go crazy with traits, but minor things like that might provide situational utility in some fights.