Agony resistance
It would be nice to upgrade directly our agony resistance from the one we put on our infused stuf:
if we had a +5 agony resistance on a ring, and we put another agony +5, this would be upraged as a +6 directly.
That would sadly (from anet’s perspective) circumvent the gold sink for crafting them up a level. I would just be able if there was a way to remove the infusion from the upgrade.
It doesn’t make that big of a different for a +5 (relatively speaking), but once you get to a +10, it’s such a waste.