Not releasing Monster as a single
No Telephone squeal
Paying 'Hair' dust when it peaked at #12 on Billboard
The Born This Way album cover

I'm sorry to say this but that was a blessing in disguise because The Monster ball wouldn't have happened and she would've grossed enough to make it in the top 20 highest grossing of all-time list.

The Fame Kills Tour without a doubt, i'm still bitter over that not happening. Just look at the stage Imagine the collabs/remixes

I pick 2 and 3, more inclined to 3 because... you know the rest.

Also Scheisse.

Fame Kills & TEOG video.

The Monster Ball would've still happened.

She was still planning to start her solo tour in March 2010. She would've just continued it everywhere else she went. She just wouldn't have done the theater dates