As the topic title asks im trying to understand why you decided to split the servers designated EU over two clusters?

Surely this is going to result in increased duty finder waits as the potential pool of players during busy periods is now smaller.

It must be a better idea to keep people playing in similar time zones in the same cluster?

Honestly its bad enough there isnt a dedicated EU datacentre, now we are split over two clusters. Two servers on one and three on the other, no idea where you put Lich (EU recommended) as you havent told us.