Oh the Humanity...

... Woe is me for not having joined the ranks of you knights sooner for I have missed out on the wonders and horrors of Haven's past affairs. While I would argue about the price of energy now a days and feel foolish about the motives behind the behavior, my concern lies not with human intervention but the encounters of past forgotten monstrosities.
As I was thinking about entering clockworks for the fun of it, the types of monsters I encounter came to mind. Surely most of them are hostile by nature and are therefore cruising for a bruising in my book, but, with me always wanting to contort the nature of my excursions, I left the passive lifeforms healing alive (except for the mew cat, I tend to one-shot it on instinct unfortunately, every single time). The puppy loves, while not particularly passive in my trek, are definitely among my encounters I leave untouched because of their aid. Of the ones not to mess with, however, the Grimalkin seems to be the only one who I wouldn't want to meet in a dark alley; I know well enough to run.
Once upon a time I read up on the different slime monsters and came upon one called a Sloom of the Lichen series monsters. While not particularly deadly from what I read, it answered the question about defense against sleep status applications. From my understanding, they no longer exist in the game. It was then when I thought that a combination of sleep and poison (or any other non-jarring status effect) could do an unwitting knight in: That idea also sounded like a good time.
While I recalled the description of the Vitasuit Plus, I caught the mention of a Tortodrone. Assuming that this was a sort of tortoise, I understood the suit was not reliable for defense. But upon reading about the drone, I found myself intrigued with the fact that it was passive by choice. So instead of asking "Where have all the flowers gone?" understanding that the Tortodrone crushed them, I'd ask of the drone instead.
Earlier today I also came upon the mention of a Gold Trojan. In his own sense, he's as dangerous as the Grimalkin but no longer apart of clockworks. Of those monsters (and possibly more) that I missed, does anyone know what became of them and why?

Cliffs notes for his post:
Why were Slooms, Tortodrones and Gold Trojans removed?

You ventured into the world of past and present....the wiki.
You sir are a brave soldier for venturing into the unknown void of information.
im serious, ppl dont read that stuff.
kudos on the way you wrote it thou. awesome touch

Please, your grammar is killing me, for the love of Socrates put an apostrophe between "i" and "m"

Sleep status as a whole and the sloom in particular was left out because it's odd and difficult to balance apparently, although I thought the Sloom could still be occasionally found one at a time in the random-monster boxes found here and there (particularly the Scarlet Fortress and the Aurora Isles). At least, Slooms were seen post-beta but they may have died out completely by now.
The Tortodrone was so massively powerful it wiped out many unsuspecting parties that woke it up and with time, was only awoken by parties that were certain they could slaughter it. Basically it was a hazard for new players and bonus treasure for top players and left alone by everyone in the middle. It's being rebalanced, and is confined at the moment somewhere in dev-land. He has not been seen post-beta, even in monster boxes (he wouldn't fit, after all!)
As for the Gold Trojan, I really don't know, but I would suppose that an immortal and totally invulnerable trojan could be considered imbalanced.... no idea when or where they existed or if they were ever even in the game or only seen in the promotional video mentioned in the wiki. I never saw one, anyway, or met anyone who did, whereas I certainly saw the Tortodrone a few times ... not sure about the sloom, beta was over before I was any good at lichen differentiation, but I've heard many firsthand tales of the sloom. Never heard a word about the gold trojan outside of the wiki. He may have been only an experiment.

With no enemies able to cause sleep, plate mail needs tweaking. Having a high resistance to a status effect that you will never have to deal with is pretty useless.
Either that, or they need to add slooms again.
Laraso, if I understand this comment correctly, they are currently messing around with the plate line (or working on something entirely new, I wouldn't know).
As for Arelics post, I think I remember someone saying that one of the reasons the tortodrone (video link for you if you want to see it in action, assuming you haven't already) was removed was because people didn't understand that they had the option of just walking past it, they would always engage and the party would wipe. I can envision something similar happening with the golden trojans, first-timers trying to kill it for half an hour before dying, but that is just an assumption.
Anyhow, Nick did say in a comment that the tortodrone (and sleep monsters?) would be coming back at a later date with behavioral changes. Not sure how long ago that was, but I suspect it may have been a good while ago. Might be in a 'to-do' box along with other tweaks like the magnus-line upgrade.
Oh well, as long as it isn't entirely forgotten. At least they won't run out of things to add/tweak for a while!

I met with a sloom once. In the wildoowds, in fact. about last year.
i was curious and stuff, so i just sat there and let it hit me. right, now remember that this is a t1 stratum, with only normal damage, right? i got the sleep status, and then i began panicking. you can't move, you don't heal and every time the sloom attacks the sleep time goes back to 30 seconds(?).
imagine a whole stratum of that madness. imagine a slime that can throw sleep spikes, sleep thorn roots AND has a sleep mist around it.
their options were either balance it or remove it/make it rare. so first they made it rare, then they removed it.
As for tortodrones, they were fast, strong, deadly at close range and had long-range atack crystals that stayed in the ground and would cause shock in a circular area around them. they could chain-dash and had tonnes of hp.
if you have spiralspy, you can see even more old monsters. cattywampus, gold puppies, etc.

missa care what yousa has say because watchin yousa squirm makes missa day!
Holy wall of text!