The cd on camellia needs to be returned to what it was before. Kags mainly rely on camellia for damage, throwing in willow when they can and using clematis and ferns in a more situational way. Increasing the cd leaves them with nothing to do except run for ~5 seconds while waiting to use it again, and then repeat the process. Kags can't simply melee enemies like hyuugas can; they have no slows unless they hit ferns and its simply not what the clan is built to do.
Basically, increasing the cd has created a very boring and ineffective way of fighting for kags.
If you are going to nerf camellia, nerf the damage a bit. A lot of the damage that is done by camellia is actually done by cleave; a bleed that does 10% of an enemies hp over 4 seconds. So my suggestion is to restore the cd to what it was, and nerf the damage of camellia and cleave instead OR decrease the cd increase to 2-3 seconds extra.