Patch 6.0

[Malsomnus]

So after reading the new patch notes (and taking roughly 20 minutes to stop laughing), I realized that it's probably going to be up to me to create an add-on named Version 6.0 Sneak Peek that implements as many of the changes described in those patch notes as possible.
(Why, yes, I'm the same crazy guy who started developing Crabby...)

So, in a nutshell:
1. Is it possible to modify game strings, e.g. to replace every instance of the string "rogue" with "blush" and every instance of "brew" with "giggle juice"?
2. Any tips for modifying ability tooltips? (Yes, Charge would get a random one)
3. Fake number squish, can I do that by carefully wrapping many API functions?
4. Is this a really really stupid idea?

[SDPhantom]

I guess you can try intercepting UI functions that set the text of various UI elements by hooking into the UI object metatables. For example, if you want to intercept and modify the text of every FontString object as they are being set, this example code would be a place to start.

--  First, we dynamicly create a FontString object in order to grab the shared FontString metatable
local meta=getmetatable(UIParent:CreateFontString("BACKGROUND")).__index;
local SetText=meta.SetText;--   Link to our original function
 
--  We need to secure hook the function in case this would be called by secure code
hooksecurefunc(meta,"SetText",function(self,text)
--  Even though the original function has already set the text as supplied, we'll replace it with our own
 
--  We don't want to throw a UI error if text isn't a string
    if type(text)~="string" then return; end
 
--  We use string.gsub() to modify the text using the old function
    SetText(self,text:gsub("SearchWord","ReplacementWord");
end);

Note the secure hook method may not work for functions like GameTooltip:AddLine(), in which each call adds a new line.