I actually agree with a lot of points, here!
I think this also applies not just to the Chaos Orbs on Leaderboards, but to PvP points, old weapons, and now to Switch players as well!
Despite the fact that Potions and the upcoming Epic Battles make it possible for lower level players to compete on Leaderboards by spending money, I either don’t think it will happen (much, at all) or think that it would make more sense for those players to purchase an Orb of Wisdom in a Flash Offer or Souls in the Shop if they need to level troops (i.e. there are already options available, such that the option of Growth or Wisdom orbs from Leaderboard events is unnecessary).
Relevant analogue: class change fee.
I feel this in my spidey senses, too!
This concerns me as well
I’m grateful for you sharing your thoughts!