OK, yes, the Fortnite throwaway comment was cheeky and dickish, and I apologize for that. However...
The veteran players in both KF games have had to put up with radical changes not just between the two titles as a whole, but within each individual game's life cycle. And a lot of those changes are making the game kinda worse in the name of attracting a larger casual playerbase (for a niche entry in a niche genre).
I watched KF2 go from something that could be an aim-intensive team game at the highest difficulties to a spam-filled jankfest, with the decline starting around Summer 2018 and still continuing to this day. We now have stuff like floating turrets that automatically play the game for bad players (and can teamkill others if the bad player using them dies) because so much of what made the game fun ("here's a bunch of fast-moving heads in all different shapes, sizes, and toughness; click 'em") has been thrown out the window in the name of appeasing content vultures.
So when players start suggesting ideas that sound on their face like they come from popular contemporaries, such as being able to construct buildings in a manner similar to a PVP battle-royale game, we get nervous and/or dismissive because usually those are introduced with "it would be cool/fun" and almost never a mechanical argument as to how it would actually benefit the core loop of what amounts to a really angry Aim Hero simulator.
Speaking of things that come from other games...
Right, blinking. As in a thing with a short-range teleport. Like Tracer from Overwatch.
I can see the appeal behind this kind of enemy, but: I don't think this would work well in a
horde game without some serious concessions. This works in Dead Space because DS is a slower survival horror game, not a horde shooter, so you have more of an opportunity to focus on the singular jerky enemy.
But when you factor in one (or more) of the same enemy that can do that thing flanked by a dozen (or more) buddies, that becomes a different matter. Especially if, like Stalkers, that twitchy enemy comes in packs and hits like a runaway freight train. Again, with regards to something like a Support Specialist in KF2: the starter shotgun does well if a Stalker happens to be caught in the pellets, but having to face multiple Stalkers flanked by other enemies that just plain warp around your aim as well as your shotgun's projectiles would
suck. You'd get off one shotgun blast and in the time it took to chamber the next shell you'd be dead three times over.
The other thing that gives me pause for thought is that damage avoidance mechanics for Zeds--block and dodge--already exist in KF2, and even in the form of being aware of flashlights and weapons being aimed their way. The catch: the flashlight/aimed-weapons-thing largely only exists for
ONE specific perk. It is mostly as an anti-Sharpshooter mechanic.
So I can
kinda maybe see the appeal of an enemy programmed to dodge your real-time aiming crosshairs
if it was an Elite (less-common) Stalker variant
and it had some major tradeoffs. But to be fair, you'd have to make them immune to fire and explosives to make sure it's not yet another anti-headshot perk mechanic lmao.
I can picture that in current-state KF2 as being a complete non-issue for the already easier perks. Oh cool, it dodges where I aim! Good thing I can set the entire floor on fire both at close range and a distance with no self-damage whatsoever. Or shotgun-jump while launching an entire pallet of explosives as the class that's supposed to be weak at close range. Or toss a medic grenade at my feet. What now?
Taking what I know from KF2 experience: There is too much non-aim nonsense for this kind of enemy to be a threat in
that context for half the perks in the game, while potentially being a nightmare for the other half (and that's the perks that are already harder to play well).
This is the sort of thing I'm talking about when I discuss mechanical reasoning. There has to be some sort of elaboration w/r/t game mechanics and design. I don't believe in just complete dismissal unless someone is being an absolute turd and not listening to reason or anything else, but I also firmly believe flawed ideas made in earnest can be criticized in good faith.