Well, wind runner is bis boot for just about any weapon damage based character. They add a ton of damage, leech, AR, they have max defense. What else you need?
Compare this with Knave 2x krys (which is from fcking Toraja, a bitch to farm those let alone two)
25% Attack Speed
(101 to 150)% Bonus to Attack Rating
+(115 to 143)% Enhanced Defense
(11 to 15)% to Dexterity
Target Takes Additional Damage of 50
20% Gold Find
Random Elemental Resistance Bonus
What am i suppored to accomplish with this? This is a double-rune great RW which is worse in nearly every way to Wind Runner, except maybe this 11-15% dexterity. But you don't get the damage and you get this weird random resist bonus which is sometimes a significant minus.
Another trash endgame RW:
25% Chance to cast level 16 Arcane Torrent on Melee Attack
+50 magic damage
+50 cold damage
+(146 to 174)% Enhanced Defense
Maximum Elemental Resists +2%
Physical Resist (1 to 7)%
Phys res and max ele res is decent, the rest is total trash. Doesn't even come close to wind runner.
They nerfed spirit walker by making it stupidly rare, because it was by far BIS for any caster that could use some mana regen. Even without this orange text they rocked.