If you choose Miraheze and you get appected you might get problems with transfering the pages... There's some sort of roadblock that makes a staff not able to transfer all of the pages. For me, It got to "Referata's slow transfering that somehow affects the speed of the servers" to "Miraheze's BS interwiki thing".
The problem is Mediawiki didn't impletmented a feature that makes you export only the pages of a certain "type of page". Since i don't want to export all of the many comments people have posted on pages on the Nintendogs wikia. And if MediaWiki impletemented that... That won't get into FANDOM since they're still using a old 2012 version of MediaWiki that was discontinued in 2015.