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?