New Hero TH and Traps

So I think that a great hero would be a dragon knight. Basically a BK but he uses magic along with his sword. His ability would be to morph into a elder dragon for 10 seconds doing splash damage and a burning effect upon morphing back or defeeted. Its a hero that people would love to level and love to use. Now I also think we need a Town Hall 11 with a range of brand new traps defenses and walls. A Dark elixer defense hasn't been down and should be strong because its cost Dark Elixer to build. A assassin trap would be really cool. When invading troops get close enough some sort of until pops out to deal big damage, with a cost to refill the trap. Just a couple ideas.

There is a dark elixir defense, the inferno tower is fuelled by dark elixir