Such as having certain weapons show up bright pink? like so:
Or making it so bushes and hay stacks lay flat on the ground (don't have an image for it). It seems like it would also theoretically be possible to change other textures in the game, such as making things be more transparent (not sure if that's possible or not, but if you can edit other textures, why not the transparency?)
Would be nice if WSE checked certain textures you were using when you started the game, and didn't let you connect to servers if you had altered certain texture files.
I personally consider it to be a form of cheating. It would certainly make my life a lot easier if bushes or haystacks were flat on the ground, and people that thought they were hiding in them were clearly visible to me. It would also make my life as cavalry a lot easier if every polearm that could rear horses was colored in as a neon bright pink texture.
***EDIT*** Got I got my answer:
Fun fact: there is already a system in place and working for a few months now that punishes client side modifications. Its effect is as hard to notice as are the advantages you gain when using such mods.
No, we will not discuss this system, and you will never hear anything else about it.
Thanks zagibu, you da man