The perfect warframe.
DR: check
Self heal: check
Energy generation: check
CC: check
Damage: check
Status priming: boy do i even need to say it
Synergy with other weapons: check (both status and crit)
Decent default range and duration of abilities: check
She's one of my main go-to frames for difficult endgame content and she never lets me down. The only thing she lacks is armor strip but this is easily solved by helminthing pillage over her #4, if you don't want to build around it anyway. I've also seen people talk about doing it with green archon shards and corrosion status but the math never checked out for this for me, it takes way too many hits and too long to fully strip an enemy this way.
I didn't know people had issues with her acquisition, I got a few parts out of the mirror defense and then bought the rest with the currency. It was one of the first frames with the pity currency mechanic and i thought people were happy enough with it ngl
Also, we're really due for a skin for her! Wish we get a deluxe soon
Allies also shooting the target doesn't really make it better, in the end it still results in needing lots of hits to strip - likely more than it's required to kill.
It still sounds like this is all more due to Verglas being OP than anything to do with Citrine, if it alone accounts for instant 80% armor strip. With a companion, shards and corrosive weapon even Loki can fully armor strip then, it has nothing to do with the wf or prismatic gem.
I'm not saying it doesn't help, each free corrosion stack when near Citrine helps a bit even if you dont equip emerald shards. In my experience though, in practice, it's easier to just cast pillage, immediately fully strip that thrax centurion and oneshot him than depending on corrosive stacks building up. It's just too slow.
edit: You mentioned mutlishot boltor, I dont think prismatic gem triggers off multishot otherwise shotguns would be completely busted with it. Shooting an enemy with a single shotgun blast doesn't proc the gem a dozen times afaik, maybe it has an internal cooldown.