The FNAF crossover, what should we expect?

Killer and a map probably. It'd be foolish of them to tease FNaF in the way they did and then only deliver cosmetics. Personally, I'd prefer it to just be cosmetics (I hate FNaF) but I don't see that happening.

I predict an influx of whiny threads about how “the devs don’t care about their preferred role” without any constructive input or criticism like the current children with alt accounts keep posting.

As for actual content. Meh, I’d rather not think about something that is so far off and just wait for the Devs to give us the teaser.

What I expect is BHVR having to put a giant disclaimer on each piece of FNaF related content, saying "THIS IS NOT CANON" to avoid being bombarded with lore questions.

Don't put that thought into the universe. I had enough with them making the Tales From the Pizzaplex canon. Mind you, this series includes:

• A broken AR booth which causes the person inside to get inside a reality where everyone gets cancer and weird jello babies just exist.

• A game which reads your brainwaves to control an in-game Monty (which can move into your brain)

• Nanobots which wrap Christmas presents, and can carve tatoos into your skin from the inside on command.

• A dream sphere which is just a one big drug trip sold to kids.

• A club of FNAF x D&D kids who eat dirt and are commanded by a robot principal.

• Virtual anime servants.

And more.

Edit: Of course, I forgot the whole Mimic thing. Just to summarize, the lore is confusing enough. There is no need to make it more confusing. Plus it gives BHVR more room for creativity.

Tbh, my biggest hope is that Springtrap doesn't end up feeling like a lot of the generic FNAF concepts I see with Hallucination Discs or Fireaxes, things he either very sparcely uses in canon in minor ways or outright doesn't have. There's a lot of uniqueness that I think could be drawn from simply attempting to adapt elements of regular FNAF gameplay over the trials, although I'd rather give Springtrap a Bite ability than a generic Jumspcare.

The map will probably be the FNAF 1 Pizzeria, with I imagine the animatronics on stage and Foxy is in his cove. As for survivor, I really can't imagine it'll be anyone but Mike, since he's confirmed to be the protagonist of about 3 games (1,4, Sister Location) and implied to be the protagonist of 3 more (2,3, Pizzeria Sim). Vanessa isn't half as popular as a character and is generally part of the games more steadily marketed towards children, so I don't think she'll get a major role.

No offense, but an ability like that would kinda be exactly what I'm talking about. Springtrap in his various forms throughout FNAF 3,6, UCN, Help Wanted, Security Breach never uses a security tablet, and remnant isn't actually in any of the FNAF games physically, it's just a background plot device mentioned a couple times that is expanded on and developed more in the books series. A power based around these abilities would be faithful to FNAF in concept, but not in execution imo. A Springtrap who suddenly pulls out a tablet mid chase wouldn't really feel right to me, regardless of whether he's canonically used one when building the Funtimes or in one of the books or something. Maybe a better way to put it would be to say that it isn't out of character for him to have one, but it wouldn't be right to make that his defining ability in game, if that makes sense.

In my opinion, a good Springtrap power would be one based around trying to adapt the literal aspects of FNAF gameplay through the DBD trial. That would likely involve a camera system, some sort of stealth ability so he could sneak up on people, and an instant down M2 so he could be a Ghostface/Myers sort of Jumpscare killer without actually having an ability called Jumpscare. There's a fair amount of fluidity in how the devs could achieve this concept, but I honestly don't think I've seen a single fan concept that hits close to the mark for me. As silly as it sounds, that kinda worries me as to how the actual chapter will go.

Rough Concept:
Myers/Ghostface/Dredge/Pig

Can stalk like Myers, but also able to lean around taller obstacles to stalk like Ghostface, and is undetectable in some manner (Maybe by entering and exiting special lockers they can teleport around the map like the dredge, this resets an Undetectable state that is lost when entering chase with a survivor/using the upcoming ability). The eyes shining with more intensity as they're stalking, successfully stalking survivors builds a bar. Attacking while stalking will cause them to begin to charge an attack like the Pigs Dash. Upon fully charging (and while still holding the attack button) they will start a Pig dash with a distance based on how much bar they had. Releasing the Attack button ends the dash early and will refund part of the bar that would have been unconsumed based on distance traveled.

Survivors can spend time to barricade the special lockers, which will cause the Killer to lose the undetectable state immediately if they teleport to that locker or just cause a localized (directionally global? for SoloQ?) noise notification that lets survivors nearby know the Killer is there.

Because they like Myers/Ghostface/Dredge and Pig as characters/their design.

And they still have more facets to their own powers (I'm using parts of them to draw parallels/give a better mental image of how the power could be structured). Such as Dredge's Nightfall and double-back, Myers being insta-down with his power (and strong addons), pigs secondary objective/delay and on-demand Undetectable, ghostfaces crouch memeing and more frequent undetectable, smaller profile, and instadown potential.

And of course unlocking their personal perks.

If there are more/unique methods of doing it, I say go for it, this just the vibe I get from having played the first game way back when. Not sure what newer stuff could be like.