Thanos Using The Infinity Gauntlet

Thanos appeared in the mid-credits scene of Avengers: Age of Ultron, expressing his dismay at the failure of his lieutenants in their attempts to gather the Infinity Stones for him (“Fine, I’ll do it myself!”).
Some people thought the scene was out of place, because nobody in that movie actually was one of Thanos’ lieutenants – but was that actually the case?
Thanos gave Loki the sceptre which contained the Mind Gem that ultimately helped to create Ultron – could it be that it was part of the Mad Titan’s plan for that to ultimately happen?
If that is indeed the case and Thanos wanted Ultron to be his agent on Earth, he would be disappointed that the robotic villain was defeated by the Avengers.
So, when Thanos gets his hands on the Infinity Gauntlet and all of the Infinity Stones, could he simply reality-warp Ultron back into existence? It’s certainly a possiblity!
