I see where you're coming from, but honestly it sounds like an extraordinary overcomplication that'd require significant modification to enemies' combat characteristics to work at all. That these modifications would largely take the shape of trails or after-images means an enormous amount of extremely distracting battleground visual noise that's of no benefit whatsoever to those players not armed with your proposed tachyon weaponry, making such weapons overbearingly desirable. It's a neat idea, but one that I think is ultimately untenable in this game.

Time-distortion areas on the map wouldn't be anywhere near as complex, but would be a tremendous pain in the neck; I for one would routinely avoid strata that would inflict automatic stun effects whenever I walked through them. Plus, well, SK is a laggy-ass game sometimes, particularly for us outside the States, and the thought of levels that kind of deliberately emulate that nonsense is profoundly unappealing to me.

It would more sense to visualize trails only when a Tachyon weapon is equipped, and only to that one player. They did it for hearts, they can do it for enemies. It'll just take longer to program.

As for #5 I'm a bit confused. They're supposed to nullify the effects of the Temporal Antics, but you threw me off after you explained it would work as a curse for Tachyon equipment and abilities. Anything beyond that made my head spin.

And the Doppelganger idea seems a little tricky. There is no way the developers can emulate the behaviour of a player, so we're more likely to see a mecha knight with our own appearance. Also, the idea of having yourself warp back in time doesn't fit either. You would be warping back in time in a sense, but as the doppelganger fights, that's basically you in the past into the present - or should we just say, you cloned yourself and the clone turns out to be the real you. I'm not against the idea (entirely, anyhow), but your logic doesn't fit here. If anything, this doppelganger would actually be you, returning to the past to help out your past self. Say, you were struggling to fight the horde of Mecha Knights in the last wave of the third level in an Arena, you activate this weapon to go back in time and save your past self. Your past self will execute the exact same actions you did back then, but the mecha knights will not, and may go after your future self instead, which could screw up your past self if you, say, knock them into your past self so it hurts/kills it. When the timer runs out, your future self is destroyed and you return to your past self, with the health you had then (minus the health you lost due to the stupidity that happened if you actually lured a mecha knight to you). However, this would be exceedingly hard to implement, and if used correctly could make you invincible in any one situation. It would also conflict with party play where everyone would be wound back to the past if used. Now, my filler here is not only harder to implement, it is also a horrible idea, but it makes sense (in a way).

I don't even know what I'm doing here, probably trying to kill your logic or something. And y'know what, I'm too lazy to look over it and edit, so I'll just leave it there so that you guys can bash and humiliate me later for all I care.

Back on-topic. The idea you have is interesting, but this looks like a rather big idea you're having, but we don't have enough information. Or maybe I'm just overthinking it? I would suggest you look over your suggestion(s) and revise where you see fit.

It still sounds like a tremendous amount of hassle for very little gain, especially the temporal anomalies; having to buy weapons, and then allocate a slot to them, in order to nullify an utterly infuriating and otherwise unavoidable automatic status affliction is some serious horse puckey. There are certain strata I'm not a huge fan of - Shock because the effect is so obnoxious, Fiend because my current loadout is vulnerable to Shadow damage, and so on - but they can be dealt with; I just have to be extra careful. But a level type where, unless I've crafted and assigned a particular class of weapon (and they'd have to go at least as far as 4* to be used on all Tiers), I'll be forced, through no other fault of my own, to do the whole thing at half speed? Never. The hell with that. That is a heinous waste of time, and perhaps more importantly, not fun.

Even the tachyon weaponry you're positing are rather overspecialised. Teleporting enemies can be a bit of a nightmare, but they can be dealt with tactically; I am in no hurry to replace my usual firearm selection (which tends to be an unflashy-but-flexible Blaster or Autogun variant) with a gun that, at the end of the day, is only really useful against Wolvers, the odd Gremlin, and Devilite underlings - enemies for which there are already extremely effective solutions.