>not just hopping to a universe where they haven't been abandoned yet
so that's why kyle runs the phone shop and the gym and probably half the city
Also there's the fact that Alternate hims could just join up with him. Which leads to the awkward problem of having very few universes where there isn't at least one person related to him.
Wait yeah, can it convert credits back to the currency of any world? Because in Perplexicon and Dark Souls, souls are currency. I mean, I'd imagine Perplexicon characters could pretty much just power level by shoving in gold or silver (which can be conjured) and getting souls. Come to think of it, since the souls in those kinds of games are easy to transfer, and RWBY characters generate their auras via their souls, I wonder if one of them could just grab a bunch of souls from those settings and just become incredibly tanky.
I think that there's probably something in place that credits can only be converted to and from your currency to avoid this problem. And no trading currencies, they just become credits upon touching the other person.