Upgrading Kobolds (5e Stats)

Artist Unknown. Into the Unknown: The Dungeon Survival Handbook, 4th Edition

Artist Unknown. Into the Unknown: The Dungeon Survival Handbook, 4th Edition

My players are going to be fighting more kobolds soon. Its time to spice up the generic versions in the 5th ed. Monster Manual. Introducing the Dragonshield and the Wyrmpriest 


Dragonshield:
In kobold tribes there are stronger individuals that recognize the necessity of armor. Of course, kobolds are poor, so the armor isn't in good repair, but its better than skin.
Dragonshields lead and protect; imposing disadvantage against any ranged attacks that are thrown at the weaker members. They will attempt to close with and isolate larger creatures to make use of pack tactics.

Wyrmpriest:
Some kobolds have a hint of magic. Wyrmpriests are leaders in kobold tribes, and are fiercely protected by their fellow members. 
Wyrmpriests use their energy bolt ability while they get in range to use their dragon breath.