BambooShoo did not reply so I will
Yes : we had instanced areas on Lochs and I think other SB areas (the Ruby sea I think but I don't remember well).
Yes Raubahn was a problem. So was the instance on the island on 4.2, the alphinaud instance on 4.3 on launch day.
We do have congestion, so it makes sense to split DC for the sake of congestion.
Now it's a big chunk of EU population separated, so we can't tell how it will be in terms of population before the split lands. We will see![]()