I honestly don't understand why feeding sentience weapons named items is a thing.
It is actually kind of going against what an MMO should stand for. Now I see a lot of people just taking their named loot, without even asking if others could use it for their build, just to feed the item to their weapon. I always thought an MMo was about working together, but with this system, ya make player keep stuff they would normally put up for roll, just so they could feed it to their weapons...
I think honestly the whole sentience weapon system should be changed. Just make it so the weapon gets the same xp as we do in quests, and make it for example 1mil to unlock the second slot, then 2.5mil xp for 3rd, 5mil xp for 4th, 10mil xp for 5th, 20mil xp for 6th slot and 50mil xp for the last slot.
Like that, it still will be a serious grind to unlock all slots, and since a lot of people will want multiple sentience items, it will keep the grind also real.