I think more than anything this was supposed to be something else, but then they wanted it to be tied to dark web and Jed created the idea of the watch so MJ could be apart of the book and now it seems since the watch wasn't explained it's be repurposed as a reason to be used as apart of the mystery so they for the 3rd time have a Jackpot character. So the mini being a backdoor tryout so people can see her use the powers and to have the blessing for a fling with Peter and Felicia. It doesn't seem like Wells is fully committed to them as other writers have to pick up the slack and we may get a few months of them together at the most. But what is clear is that MJ cares about the pseudo kids here and it's hinted that she doesn't want them to be separated and with his comments about MJ getting a superhero origin clearly paints what's going to happen in the next 2 issues of ASM.