We know more troops are eventually coming to Clash of Clans. It's only a question of what and when. Recently the Bowler made an entrance, and the Miner has been wrecking bases with ease. So much in fact, that it's almost too easy. Drop 48 miners, heal them, and watch. It doesn't take much skill, which is why Supercell slowed them down.
Still, we want to see more troops that are strategic and exciting. Another dark troop that can deal massive damage or even a Dark Goblin that targets Dark Elixir first. Another idea is Supercell could look to add some of Clash Royale into Clash of Clans. By introducing some "ice" troops to slow down enemy units or buildings. An Ice Wizard, or all new Dark Troops for the Builders Base.
Again, these are probably coming soon, it's just a matter of when.