Meh. Bluet is not as good as she seems. But even without Skill act, she is still an evade girl with +70% Crit damages. That's the highest Crit damage buff right now.
Heart Tree looks a bit better. Too bad she is a R-medal shop girl.
edit: Bluet would works really well too with Spider Lily. They can make a nice combo. This new Evade+Miss+Debuff meta could actually works (even if it's just a variation of Crit meta but anyway)... if they stop with thoses annoying accuracy buff pests.
It could be a good response to priority pests with a wonderful attack power behind. But the options are too limited right now. Getting Bluet and Heart Tree is hard (especially if Heart Tree is time limited like the other R-medals girls).