Remove Unity And Replace With Something Cool

Remove Unity And Replace With Something Cool

I need to "Safely" remove Unity 12.04 and replace it with something cool.
I have looked and I have tried a couple of things (one which cause a
complete re-install of Ubuntu). So maybe someone else can help.
I am a Tinkerer! I Love Customization! I get bored and have to constantly
change things, and Unity just won't give me that FREEDOM!! Don't get me
wrong, I love Unity for something else, and there are a lot of great
things about it. But it is just NOT for me...
Any suggestions would be greatly appreciated...
What I am looking for:
"SAFE REMOVAL", of Unity, and install of "Something New"...
As much customization as possible...
Bells and Whistles!
Please Help! Unity is making me crazy...