Internally discussed at: https://discord.com/channels/1232515883461644310/1232676080570204200/1440172928179372103
The core idea is to extend P2:CE's coverage to Portal 2 workshop maps by autogenerating a separate campaign for them at runtime. Backwards compat is not necessarily so much an issue for standard workshop maps. We'll cut our losses on extensive maps that may try something wonky.
Considering P2:CE is already able to play Portal 2 workshop maps with very few issues, this should be pursued after the Campaigns API reaches v1.