ESUOH Is there a list of tweaks that are allowed ?
There are so many things that can be tweaked I honestly don't know them all. Therefore, for the time being, I can't give a list of what is allowed. The list would probably end up being shorter by saying what isn't allowed anyway.
I can really just say again that anything that is an obvious unfair advantage isn't allowed.
I will add another example of an obvious unfair advantage to the 2 I already mentioned previously which were: don't make the water texture transparent and don't make the flag glow huge so you can see the flag carrier through walls further than you normally would be able to.
An additional example of a tweak that isn't allowed: There is a way to change the texture of your player skin. Some people call this a skin hook instead of a tweak but it is essentially the same thing. Not all textures assigned to the player skin would work online though. You might have seen this before where someone applies the translocator texture to their player skin and then you can't tell which team they are on. This one would be noticed by everyone though not just the tweaker and usually gets that player lots of kick votes.
In short, I'm really only concerned with anything that is a huge disadvantage to other players. These things should be obvious to anyone using them that they aren't fair.