The best armor in the game is not dyeable...

[Belhi]

Except they didn't add the healing armor. Only the tank sets. The Bogatyr's set for example did not get a new version.

The Bogatyr set for healing? No they didn't. They did add it for other classes though. Guess it falls back to that Acolyte vs battlemage crafting sets issue from 2.X.

Well honestly its dumb that any armor isn't dyable. All armor should be dyable.

Perhaps its to give crafters more things that they can produce that offer value. After all for the most part the crafted gear really isn't worth the investment for its combat capabilities alone. Most of it probably sells for Glamour purposes.