1) Delay tyrant slash speed. Give tyrants 2 slashes at current speed, then have a .5 or .7 second delay before the next 2 slashes.
I'm not convinced the tyrant is balanced yet. If it's not the slash repeat rate will probably be the next thing to get changed (range shouldn't really go down given the size of the model, and I want the damage to stay at 100). I don't think it needs anything more complicated than a number tweak, though your idea is neat.
2) Decrease human movement speed based on gear.
Humans already have a hard enough time getting around maps, and aliens have plenty of means to boost their speed or even slow down humans when they need to. Try out the new basilisk gas if you haven't yet. I don't really know what you mean by "reflexively moving to induce less response time against aliens" -- sounds like
dodging to me, which humans should be better at if anything.
About the granger spit:Apparently it was supposed to, all along, slow humans down and now it does (in the development version), making it not quite useless. I think this is dumb because aliens already have a class specifically designed for limiting humans' movement. You could make the case that creep and trappers already make the basilisk less special, but the spit happens to do the same thing to the dragoon and its range attack, which, again, is supposed to be something special enough to have to wait till stage 2 and pay 4 frags for.
Okay fine, it's a quirk,
but:
Grangers should not be fighting humans. They cost nothing to go so there's no immediate disincentive to feed madly. And they will feed, because they're slow and fat with low health. Worse than that we all know they have a tendency to accomplish little besides getting in the way of classes that are actually meant to fight humans.
The simple reality is that if grangers need a toy to play with then building as aliens isn't what it could be. If the alien base is complete and isn't being attacked, the grangers' job should moving things forward to support their teammates, not getting in the way by quixotically spitting on turrets. I don't see any reason to shift the granger's focus away from building.
It's not breaking the balance, however, and the game doesn't have to be perfectly streamlined (it's not otherwise anyway), so unless enough other people also want it gone I'm not going to bring it up again.