I`ll make this quick.
Cattleya still a C for me, just as we spoke on Discord Wut.

Cactus - everything has been said already. Neutral A tier for me.

It seems like some people are considering A tier to be .... weak ? Guys S tier is BROKEN only girls. Its a tier reserved for bullshit characters like Kerria and Saffron (and a very few, select additional ones).
A tier is the HIGHEST tier as far as balance, design and overall performance go. Any girl who can be A tier is amongst the strongest girls available.
There is no shame in being very strong, but not broken. Thats the point > Broken is not a positive meaning, and is only viewed positive since its a game where you as a player get your hands on the broken stuff. In most other games its usually you facing the Broken not having it.

The crystal drop kills her S tier potential completely, just like it does with my strongly anticipated Waifu Mei.

Thus the reason I am saving myself the time not repeating what has been said. You bet your shiny breaches, I`ll go full writer mode on her once we get to Mei, seeing as she was my very first Waifu in FKG and the very first girl I spend money to get.