I think adding a skill point in health should increase your current health too, ex. when you have 30 hp and you add a point into vitality, you don't have 30/32 hp.
I think the daily rewards should be upped a bit, like after a couple days of playing the rewards are almost..not really rewards that much? ex. the 30 gold reward was a little disappointing
The ability to demolish buildings would be nice because I try to hold areas for sieges until I gather enough units to push on, and when I can push further I'm unable to place buildings sometimes due to the limit of 4.