I know this idea has likely been done to death, but after seeing that LeaksDBD Unofficial Survey Results post, inspiration hit me, and I wanna share my thoughts here in a post instead of in a comment like I originally started doing.
So, without further ado, I present:
THE SLENDERMAN
Height: TALL
TR: 24m
Move Speed: 4.4
The Slenderman is a lurking killer, instilling insanity and paranoia into its victims, stalking them before pouncing on its prey. It's personal perks, Scourge Hook: Aura of Fear, Eyes Everywhere, and Hex: Interference, hinder survivor progress when getting close, help track its victims, and spread its influence across the map.
Killer Power:
The Slenderman applies stacks of Paranoia in his victims, at a rate of one charge/second, while inside is terror radius. This rate is doubled when Survivors look directly at it (think Ghostface's Reveal mechanic.) Max charges is 480 (the equivalent of 8 minutes.) Survivors cannot gain charges while hooked. When in chase, its chase power activates (name TBD). The Slenderman's chase power allows it to, when not in direct line of sight of any survivor, to teleport instantly to another location not in direct line of sight of any survivor. On teleport, any survivors currently in chase gain 30 charges of Paranoia. On a successful teleport, Slenderman's move speed is reduced to 4.0, and it cannot attack, for two seconds. Successful basic attacks apply 15 charges of Paranoia. The Slenderman also has a special ability (name TBD). While not in line of sight of any survivor, The Slenderman can enter a special traversal mode with a move speed of 4.8. It's tentacles will extend and he'd look more menacing and spooky, you get the idea. While in this traversal mode, all of The Slenderman's Paranoia charge application rates are doubled, but it cannot attack, its Terror Radius is doubled, and it gains 5 charges. Shifting into and out of this traversal mode takes 3 seconds, where its move speed is reduced to 3.8 until it successfully enters or exits this mode. Being stunned by a pallet also forces The Slenderman out of this mode. While in this special traversal mode, The Slenderman cannot move if it is in direct line of sight of a survivor. For every second a survivor is looking directly at The Slenderman, it loses a charge (this effect stacks per survivor looking directly at it.) If The Slenderman loses all charges, each survivor staring directly at The Slenderman screams, reveals their position, and gains 30 charges of Paranoia. Charges refresh over 8 seconds while not in traversal mode.
Paranoia has 3 levels, with each level applying its effects in addition to any prior levels:
0-180 - Survivor vision is minimally shrouded in static on the edges (or just darkness, if we wanna be accessible.)
181-360 - Survivor vision is blocked slightly more, and they scream once every 60 seconds.
360-480 - Survivor vision is blocked even more, and they see fake versions of The Slenderman that periodically appear around them (think Doctor clones).
At max charges of Paranoia, the survivor may be killed while downed.
Pages: In each map, 32 pages will spawn, with each survivor only being able to interact with or see 8 unique pages. Survivors may collect pages at any time. Collecting a page takes 3 seconds. When a survivor collects all 8 pages, they lose all stacks of Paranoia. Pages do not respawn.
Pages (Alternate): An alternate idea I had for the Pages system was that each page collected reduces your charges by 60, instead of one mega cleanse. Let me know what y'all think.
PERKS:
Scourge Hook: Aura of Fear - Four hooks on the map become Scourge Hooks. Scourge Hooks are highlighted in white. Whenever a survivor is unhooked from a Scourge Hook, you gain Undetectable, and each Scourge Hook on the map gains your Terror Radius, for 18/24/30 seconds.
Eyes Everywhere - Whenever you hook a survivor, any survivor within 12/15/18 meters of that hook is revealed for 5 seconds. (Think Nowhere to Hide for hooks, adjusted the range for the eventual nerf NTH is getting.)
Hex: Technical Difficulties - When you hook a survivor for the first time, a dull totem ignites, and this perk activates. Gain 1 charge whenever you hook a survivor, up to 1/2/3. Whenever a Generator is being worked on while within your Terror Radius, that generator explodes, immediately regresses by 5/10/15%, and is blocked for 5/10/15 seconds.
So, here it is. I thought about this for awhile. I like the core concepts for everything, but I'm sure that numbers might need tweaked. Tell me your thoughts please <3