Wet effect is a joke!

[Valkyrie_Lenneth]

There is nothing difficult about putting a particle effect on a character... It is done all the time in a lot of games, perhaps you should speak with your graphics team because I can create and implement one in a very short time period...

It could be constraints within the game engine, or constraints with how the scripting would work, a particle effect is just that, but you have to have it scripted, and that could cause issues with the way they have things coded. There's more to it than just BOOM added particle effects....