You say I complain without having seen the new system, but honestly, you are arguing while admitting that you don't know it any better. You are assuming just as much as we are.
Actually no you are wrong there. The devs have been running the changes on the Dev server for quite some time now, so apart from also being involved in in coding the damn thing I'm pretty sure he knows the proposed system and its specific implementation better. The fact he hasn't run the numbers on a specific scenario doesn't mean he doesn't have enough info to be a pretty good educated guess, where as we players are left with only the most basic info to try and peace things together.
I can see a case were it would would be detrimental to take another region, but such cases involve realms that are already very large. As Tom has said, the game still aims to give incentives for large realms to split up into smaller ones, so I would guess it designed to work that way.
