More aesthetic changes for king and queen.
Every time you complete an upgrade in clash of clans, the upgraded item in question looks different. It might be subtle, such as Archer tower from level 6 to 7, or drastic, such as x-bow from level 2 to 3. Every single upgrade.
Except the Barbarian King and Archer Queen.
Sure, you get a couple of minor changes every ten levels, but that is hardly distinctive.
What I am suggesting is every level, the king and queen look different to the level before hand. The king might get a golden sword. The queen might have a different coloured bow. The king might get a fully black armour set. The queen might shoot fiery arrows at a certain level.
None of this would actually make any difference to the gameplay, but I think it would be a worthy addition to keep players motivated to spend thousands of DE on upgrading their heroes. For example, consider the conundrum faced by many a farmer: "Oh, should I upgrade my heroes? Yeah, you get a few more DPS and a couple of extra hit-points, but do I want to wait that much longer to use him in my raid?" I think that drastic aesthetic changes could make a lot of people upgrade their heroes much further than what happens now. I mean, there are 40 levels for the king and queen, and there is no feasible way to achieve these without either gems or a lot of dedication. If you make every few levels drastically different, such as colour change, for example 1-10 could be gold, 11-20 red, 21-30 black, but with variations all the way through changing every level, it would be another great goal to get.
Thanks for reading!