What brings so much confusion about WW leaderboard is that one should expect the top of the LB to be crowded with alliance full of global ages players, not medieval or classical (it's the name of the game after all, Dominate other players and alliance, mainly by technological advantage). But currently, it's all mixed up. To me their are 2 possible paths:
a) I'm fine having those alliances with half global / half classical taking their chance at making the top of the leaderboard. But then, they should face the risk to face full global alliances each time they push the search button, otherwise it's too easy to game the system. This is not the case today due to a matchmaking based on average level.
or
b) Have different leagues (much more complicated to implement but the most interesting). The top teams, like the uncontested top-1 (without multiple accounts) Korea Army and smtg like 20 top-notch alliances (1st dynasty, 50, DW, USA Elite...) are seeking to fight the very best/advanced alliances. Not interested in fighting sparring partners every other day. (It's not meant to be rude; it's true reality: those beasts want to DOMINATE other beasts, not kitties).