Eureka Weapon/Armor upgrades next patch?

[Vaer]

It wouldn't since the Ryumyaku items can be upgraded to 370 via hunts(which can be rather easily farmed too) and ivalice-themed tokens. Only thing it would make "useless" would be the Alliance Raid gear itself. And at this point we can all see its greed only due to the Vaan outfit.

Depends. You still need the base 360 piece which is from lockout tomes to even get the 370 which substantially slows down your gearing rate and makes Alliance Raid gear more attractive. If you are just starting right now or returning you don't have that many tome pieces to upgrade making the unlimited hunt upgrade items pretty much useless. In the same way, if you want to gear alt jobs you need to wait for tomes to get the 360 pieces before you can upgrade them.

If Eureka supplied the same ilvl as alliance raid and even base tome it would be too easy to gear up all your alt jobs which they probably don't want.

Besides, they already have the upgraded crafted gear which is also 360 so they basically traded upgraded eureka gear for the upgraded crafted gear which is a similar option but severely limited by gil which doesn't completely kill off the alliance raid gear since there are probably people that aren't going to drop millions on alt job gear.

The only thing I wish they added to Eureka even if they were 355 are accessories. There aren't that many options for those compared to left side.

It would make some sort of sense if they dropped the weekly lock on the tomes and alliance raid (good luck winning anything@greed only with no lock) and keeping the upgrade items weekly locked/removing the hunt upgrade items. So you would have 4 options at 360 gear but for 370 it would still be locked. Doubt they would do that though since 360 is sufficient for most content in the game and they need to prolong the patch by 3 months.