His wife and kids left to return to their orginal homeworld of Earth 616, and it saddened Doom. Dark Strange though dead in his world, was alive back in his timeline. Doom pondered long, for he wanted revenge against the Illuminati. Barnes's lieutenant, Maria had helped him form a large army, and even gotten the Thor Corps to turn against him.  But, something no one expected happened. Doom stood out on the balcony looking down at his new army. Some unknown, unexplainable event, perhaps it happened during the events that put the Multiverse back the way it was, led to an army mixed of Ultron bots with his Doom bots. Each bot had Adamantium and Vibranium metal bodies, making them extremely deadly. 

"What should I do with such a vast army that could destroy a world so easily?"

There were at least five million Doomultra bots as he named them, with a factory in the process that would enable Doom to make more. It had become possible with this army to retake what he'd originally started, but now he would have to take the universe world by world. By this, his calculations determined that this would take more than twenty years to fulfill. If Doom could increase his bots output, in a weekly goal that was substantially high,he could overtake every world within ten years, highly possible. He had calculated that he would need at least five million bots for one to two worlds. 

"You will never see me coming, Barnes."

He muttered to no one but himself. During the battle that led to Panther and Namor's death, Doom also had the Infinity Gauntlet to help with setting up his new operation in Utopolis. He had already made Battleworld the way it was before this mess had started, he'd just conquered his world again, back to rule with the Iron Fist, he'd started off with. 

"I'll have your world, Barnes, and every other world too."