Great Idea for Glorious Battle

How to make Glorious Battle the event for all, not for few big guys only?

Devs should to divide all players at 3 groups:

0-4000 Combat Rate.

4001-8000 CR.

Over 8 000 CR.

Players will fight and fill city inside his group only. Everybody can fight, everybody must fight, everybody is important for faction success. We get much more activity, battles will be more difficult, unpredictable and interesting for all players.

We have 3 leagues in Alliance Conquest and Siege of Winterfell. We need 3 groups for balanced Glorious Battle.