I have no real grasp on coding, but what I was thinking of whas that if there were two letters after eachother that were capitalised, the second one would be decapitalised.
Example 1
Example 2
Example 3
This isn't needed since OPs already have the power to enforce their rules and deal with such ordeals manually, but I like this idea, especially since it doesn't have to apply to all hosts and is an option.
But why not just have a command to control spam in general?
/spamcontrol; <no two consecutive letters can be uppercase> and it would also change the current flood kick system to something with more restricting variables (no same lines of text x times in a row within y seconds)