So thats not an arguments, if you're not active or just a rookie in this game, I'm pretty sure you not going to get a place in a top5-10 kingdom for no reason. Those wing kingdoms eventually would need to start thinking about their position in the main one, for wining this server, not just participating in it, and quite not whole meta community would fill in that 50 or 60 member gap at least.
have to disagree on this one at least for the rookie part. of course if you are showing no interesst in contributing to your kingdom you will get the boot at some point but even people who never played travian before can be an asset to your kingdom (not only for his tax and treasure contribution) if hes willing to lern what the game is about and to work with the kingdom. and ideally if this person enjoys the game and sticks to the kingdom you might have an actually really good player for the next server or the one after.
Also if i had to suggest a soution to mass kingdoms/metas/wingspamming i would rather do incentives instead of limitations. like giving kingdoms a VP generation or resource per stolen good boost depending on their size (smaller = more). feels better to me at least. would not prevent the "veterans unite, noobs get left out" problem tho