+1 to everything in the comment above.
Generally multi panel is great, but it can be a bit annoying when you are opening an entity to simply set a single field or you need to quickly get somewhere else to find some information without losing context.
Timeline view => the timeline disappears, context is lost.
Board view => the entire board disappears, context of the column is lost.
When viewing a linked entity from an entity
Perhaps it would be nice to be able to control how the entities open for the view, or perhaps have a modifier key, e.g. alt click to open the entity as a popup. Or perhaps these views haven’t been implemented yet.
Really looking forward to seeing the next iteration.
And my final comment, is on my 30" monitor the world is great, on my small laptop screen things are bit more tricky.