I think all that have badged first should continue in any for which they desire.
Like it or not they have won by skill or by funding (or both) and therefore they are the server winners.
Winners do not and should not be penalised for winning. Winners should be rewarded and that comes in many forms. Examples of that reward is, they help next alliances or dictate the run order and to be honest that is the way it should be as they have first badge and server effectively belongs to them. If it is not agreed or accepted by others then them others should fight the winners for the right to control server. Nothing should just be given it is a war game.
Oh and the name of the game is " Command and Conquer Tiberium AllianceS " it is not "Kill the middle then disappear" ;-)