I'm aware of this.
Tbh, I think on Ep6 they should implement them all. It's not like someone's going to go all out with Absorp lapis, when each level only gains 25 absorption, whereas level 6 stat to level 7 stat was a 150% jump in stats. If you linked 5/6/7/8/9 on a piece of armor, that would be 500 Absorption per piece, X 4 = 2000. When you're getting hit for 12-14k damage, negating 2000 for the cost of 5 or each of your 6 slots, is a total joke. In other words, it's no longer an unbalanced lapis. I really don't think anyone but orcs will link more than one absorp per gear anyways. Or a Rec Guard.
Abs 7s gives you 100 abs. I'm not sure what lv8/9 give you, if you'd care to tell please do, i'm curious to know. Abs 6 has 75, you can kind of guess why they held it back, if they had put it in, you'd get 325 abs + armor enchants, summing up to be 420 abs x4, or 5 if the player is a w/g or f/d.
It is a joke, but i'm sure a lot of players would actually do it instead of get the real value of the lapis that is needed, IE craft, safe, fortune, wise, shrewd, and mystic.
Thats why i'm saying it's probably better, if abs 8s is 125 or 150, and abs lv9 higher than that, then yeah, its going to be hard going no matter what. I'm not sure if you'd be able to hit 12-14k damage unless you're referring to EP6 instead of now.