This is a terrible suggestion. The reasons have all pretty much already been covered, but lets go a step further and I'll tell you how it goes down...

A reshuffle happens
Top kingdoms with players willing to pay - buy invites and invite back their entire kingdom (while killing off the rest of the kingdom) within 1 age, the top is right back where they started
Kingdoms who AREN'T willing to spend money, can't do the same, many quit because they are no longer playing with the group of friends that has kept them going so far.
Game numbers decline, number of potential targets drop dramatically, fewer targets = more bashing, more people quit



Let's not kill the game off..