What to Nerf

Its a good game but something needs to be done about the meta decks. The royal giant is an extremely over powered card and supercell refuses to nerf it. Increasing the deploy time from 1 second up to 2 seconds isnt a nerf. Either nerf the hit points or damage. Because of the amount of hit points it is able to deal unbelievable amounts of damage for a 6 elixir card. I also have a problem with the knight. It has too many hit points for a 3 elixir card. Either up the elixir to 5 or decrease the hit points. Its too strong for a 3 elixir card. Some other cards that need a nerf are:
Sparky (in damage)
Elite Barbarians (in damage)
Mortar (greater elixir cost)
I hope that supercell is able to address these concerns because many players are leaving the game because these cards require no skill to play.

Pulpits purports about Clash Royale, v1.9.2