User blog comment:MisterWoodhouse/Community Contract for the New Fandom Platform/@comment-5146399-20190714131749/@comment-25646820-20190714163635

The direct answer to your question is "No." Upgrading the instance does not force a change in skin.

I have suggested downthread allowing wikis the ability to choose their skin, either Oasis (the current one used here) or Vector (the one that superseded Monobook, is used by Wikipedia and many other wikis).

I suggested it for two reasons:

1) Firstly and most importantly, no one skin fits all. Letting wikis choose produces results best for that community. 2) It would show the communities that FANDOM is changing, that it now cares more about the communities than marketing decisions. @Brandon Rhea and @MisterWoodhouse say that FANDOM is changing its ways, this would be a great proof of empowering wiki admins to make decisions that are right for them.

I would love to be more supportive of FANDOM, to see that some awful decisions prior are indeed a thing of the past, but so far neither one of the staff commenting on this thread have even acknowledged a potential for Vector when I and a number of others, including you, have suggested it. I think this goes against the listening and constructive change paragraphs above.