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I didn't make New Meta just because RegiMons didn't get approved, I just wanted to do something new. And I'm used to this community too. Also, you shouldn't post feedback on the submission thread, that's what the workshop is for.
I'm seeing the post rather late, but in case nobody ever responded about OM Mashups: it's a subroom of Other Metas, so you can always access it through their room banner as for Shared Power + Pure Hackmons i dont think that has much of a playerbase haha esp with neutralizing gas in the meta