Even though you are a complete jackass, I am going to address all of your points.
There was absolutly nothing wrong with V11,
There was nothing wrong with v10, or v9, or v8, etc. If people like you got your own way, we'd still be playing the torque demo app.
most of the mods and add-ons saved on my computer no longer work
By "most of" do you mean the duplicator (fixed already), the fillcan (fixed already) and TDM (simple gui compatibility problem)? Nothing major changed, 99% of all add-ons still work.
Everytime I log on I am forced to remap my comtrols and when I host I get the same problem.
That's because you don't have all your controls mapped. IE you are a huge noob and the game is trying to protect you from yourself.
The new TDM mod is a piece of stuff aswell
I agree, but that's hardly a v12 problem now is it?
I lost all of my minigame presets and brick presets
If you used the auto updater, that does not happen.
I am seriously considering taking a month long hiatus.
See you in a month. You will not be missed.