Hey! Finally after a very long approval process, plugin which provides simple and powerful tool for designing missions is in the Marketplace.
It extends to the limits UE4 Editor redefining all nodes and visuals for Graph and also providing new types of assets.
Marketplace link
https://www.unrealengine.com/marketplace/mission-objectives
I was looking for a very long time quest and mission system. There was nothing like that in the Marketplace before! Thanks!
You know what ? that caption could be? Bravo.