I am enjoying the irony of the two title suggestions not being new features at all. Just more of the same, but bigger.
I thoroughly agree with the intent, but none of the ideas.
Expanding alliances? See Dave’s post, and also note that War matchmaking stumbles on # of members enough as it is.
Legendary Troops? Same but bigger. Also, like Epic Troops don’t take long enough to build up. Scaled the same way, FTP/CTP would be looking at the better part of a decade to fill them.
Heroes of Power that fight Telluria? Intentionally drive power inflation again? 'Nuff said.
New Elements? Again, I like the concept, but think of the math on matches! We already have enough terrible boards with only five colours, seven colours will make that MUCH worse.
This kind of thing is why I don’t really criticize the devs much. Coming up up with viable new features is hard, and if you listen to players too much, you get Rifts, Mega-Damage, and Titan Cyberknight Juicers. Some old school power creep for you there.
But, hey, don’t stop thinking about it! You clearly want a good game. Keep it coming!