What's the point of upgrading to TH10?
I'm a maxxed TH9 except for walls (25/250 Lavas) and heroes (16/16). I don't see the point of going to TH10 once I max out my heroes and walls. TH9 is the best place to be at for war. You can unlock all troops and spells (except freeze) at TH9, which gives various attack strategies to choose from. Once I get 30/30 heroes, I'll be 3-starring TH9 with relative ease. It's the funnest TH level to be at by far.
At this point, I don't see any motivation at all to upgrade to TH10 once I max out my heroes and walls. Plus, TH10 seems too stressful, which will take my enjoyment out of the game.