In every server the damage you do with a Kiringku halves after the target has 100% MR or higher.

I think a good way to help balance the damage issues here is to scale the damage half point  to some place above 100% MR, like 150%.  This …

You did for some, but many of the items that you need to craft the finished weapon/armor aren't in the shop.

Would it be possible to add the items like Ala of Fairy, Ecdysis of Arachne, etc to some NPC shop?  It's pretty annoying to have to find those wandering NPCs in elven forest, especially ones like fairy queen that are only around at cer…

Thebes staff and kiringkus only get more powerful as Illusionist gets higher level/int, so there are end game options.  If anything, they need more mid tier options that aren't based on enemy MR.