Trying to get my head around this.
We are running headless, so no templates at all. The site has over 100 DocTypes.
That said we do add a .Net GraphQL layer on top of an API.
All the v8 content is in Nested Content which we hope to use uSync migrations to get to Block Grid / Block List, and then use the Content Delivery API as a base for the GraphQL layer.
Does it make any sense for us to even consider going straight to v14?
There is no rush as long as we meet the v8 EOL deadline next year.
If we decide to go to v13, what will the upgrade path look like to v14?