Now if I might toss another piece of advice here Wutan my friend.

The thing is .."ahem" (turns on the old mans voice from Diablo)

*In our days, the age long past, there was the gift, the pover of the skill activation ! It was a unique power, one that brought terror ! Yes Terror I tell you ! to the hearts of the enemies ! The pest shook in fear and the seas turned red (green, purple...or whatever is the color of their blood you get it ) from the blood of the slain monstrosities.
Yet as time went by and humanity managed to restore more of the desolate landscape, the great Spirits of Nature that gave us this power grew togather with the lands rebirth, and in their eternal wisdom and kindness, they bestowed even greater gifts upon us, in order to protect the world from the horrors of the Great Devourer (yes.. because Tyranids and stuff hehe).
They even send one of their beloved children, Nae to help guide the Knight Commander and help him !
It was these new blessings that brought even more power to the flower knights, allowing them to stand to toe with even the greatest of the beast, yes !*

...errr... or in short - the Skill activation, which was very rare back in our days, is now something of a standard ability granted to most 6* knights upon Blooming.
If you take a look, back then if you evolved and got a skill act that was the main thing the girl did. These days, each girl has multiple of the "what she does" and skilla ctivation has become much more widespread.
As such, it is much easier to find girls who have, it, thus rather than fucsing on building your team as Skilla activation team, its better to build your team as "Something else" but make sure all of the girls with the "something else" ability have skill activation.

I dont wanna keep pointing towards my team all the time, but its easier so forgive me
My girls main condition was - Critical skill as main, and Skill activation as second. As such all of the girls have some sort of Critical chance and/or Critical damage up, ability and in their secondary they have skill activation (not all of them but the majority does.)

Just something to keep in mind. Since you can get two different synergies in one team instead of just one this way

*Yeah the rainbow coins are good, but take long time to pile up. You get some whenever you pull a dupe 5/6* from the gacha, so while slow it builds up over time.