Stun on snipe is a terrible idea in the early game, because you have no way to mitigate it (target) because you can't see it coming, and you can use it intentionally to block something that shouldn't be blockable all through the game (block locking a portal when you see someone running up to the port flag).
Now, also consider when you are sniping cross lane, maybe it will block a skill cross lane maybe it won't. Adding some random maybes cross lane is also not a great way to improve Reg when all his problems are failing terribly in the lane he is fighting in. My opinion: Any improvements need to come by player "skill" and not so much random luck.
Snipe should not interrupt until level 15 because it is a powerful way to block a portal lock, at this point it is justified as being a powerful skill. Because really, deadeye by itself is crap, and adding auto attack effects to the snipe is the theme with Reg. (eg: tracker but not MoTB, otherwise why don't we just let him shoot mines on his snipes too
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As for fast interrupts not making a difference... come on, I am always having to be careful when I use vulnerable skills / items like boulder / hammer / spit(besides the telegraph if you can count, you can probably interrupt this skill every once inawhile) / all the fire skills on TB / healing potions / mass charm / frost nova / ground spike (like spit) etc... blocking any one of those skills makes a significant impact to the outcome of a battle.
If you are behind the lines attacking in a 2on2 or 3on3, that extra fast interrupt in the battle is HUGE.
Cow, you certainly implied the problem is low life, but now that you've explained, I've always agreed too, more standoff power (or sneaky kill power as you describe it, basically not engaging in the fight directly, but being able ot be a threat when the opportunity exposes itself).
I dunno, what can I say on skill similarity except get over it... every skill in the game falls into certain variations. Fast ranged interrupts are one of the most powerful things in the game... give it to the weak guys and play with it before dismissing it outright.
At least I am making mods available to try stuff out and playing 100s of offline games with them with my friends, you 1337 guys would have more credibility in your opinions if you at least tried it and came up with some details to back it up based on your observations, rather than your pre-bias based on how you think things play out. [this is me chiding you to play some modded games, it may or may not change your opinion, but at least you could be 100% certain why
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Also, I did have 5% movement speed on Angelic fury in CrazyTown 3. It didn't seem to make any difference... but I can put it back or make a separate standalone mod if someone good wants to play a couple of test games with kiting pew pew pew Reg.