Here's something I'm sure alot will be interested to see;
After crafting an item, lets say you got and epic artifact with 10 stren 10 melee and 11 exp, you should be able to switch one stat into another of your desire.
But equivalent to the tags you are about to swap. so lets say 11 exp will give you 10 armor or endu or 11 drop and if the 11exp you were swaping was lets say 17, you would get 15 armor/endu or 17 drop.
This could be free for 1 tag only, OR what I think is better is that you pay 1 frag and/or 1 frag and some gold, of that rarity and type of the item to swap the tag to your desired choice. ofc like I said the amount of stat should be the same/equivalent ratio to the one you are removing.
Using gems to swap should also be an option also, better for both bases.
Its funny when you craft like 10 High rarity things and they all turn out to have something you totally don't want, like a stat which will over cap, or 22 drop which adds too much useless ap. and sucks up GS.