Bluet is just a good intercept girl but have one of the best (if not the best) crit damage for 5 with +70%. She is not insane but is the best choice when you want as much crit damage as possible.
Good addition to your future intercept team.

I think low HP needs heavy buffs to be OP. There is already way too OP girls at full HP. Low HP girls needs to be over that to justify their 1% HP.
Also, these low HP girls drop to 1% HP but lower HP abilities reach full potiential at 1 HP, not 1%. This means they will be at full potential only after a guts. There is still a long way to make it actually OP. But it could be a thing one day. They managed to make solar team goods. Why not low HP?

And yep, this site: http://tunachaofan.blog.fc2.com/blog-entry-782.html is good. Puting Tritoma and Aeonium top tier in their respective categories is a sign of good taste quand quality.
The analysis of Tritoma is pretty accurate. I should make a video of her annihilating the harest daily event mission.