[quote=@ZAVAZggg]
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Since I'm on my primary account at the moment, I'll go a ahead and answer now. Yes, I am comfortable with the idea of multiple time travelers, though I must ask for the details of how time travel functions in this before I even attempt to touch it. Manipulating times "flow", regardless of if it actually flows or not, is one thing. But hopping about through time? That can be messy. Do changes create alternate timelines that exist alongside the original one? Does the original get replaced? Or are changes just impossible due to time self correcting?
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In MR, every dimension has its own (or multiple) time travel systems, often defined by whatever method the time traveler uses to go back in time—that way it can work however you want. If they want to go back in time in every dimension at once, it's a little more convoluted.