(Ideas)
Monk and cannon cart one of weakest cards in the game. Below are weak cards to buff.
(MONK): the hp buff is great, he needs 100hp more and need ability to last 1s longer to counter flying machine. Dps buff also will make him solid. This makes him feel like a solid tank option compared to mighty miner and skeleton king, and since he costs more elixer. He also should reflect executioner faster and better.
(MAGIC ARCHER): he needs big buff to dps and slight nerf to crown tower damage (Like miner) so he can be great at defense (which he lacks and is very weak against countering tanks), and to be not too strong on offense.
(CANON CART): need a big buff, it is one of the least used cards in the game. It needs to be good at countering big tanks to be solid as other defensive cards. He needs more dps and slight more hp to survive during offensive push.
(PEKKA): good buff, he needs more of hp buff or both. He is countered easily and by most cards and especially at high ladder.
(GOLDEN KNIGHT): if not having dash range buff, (maybe reduce dash tower damage), then he needs some rework or buff.
Lastly, maybe there should be a possibility that tornado and fireball can counter skeletons evolution when they are multiplaying. Or that the multiplaying is slower.