BOMT era:
Deep In My Heart (instead of From The Bottom of My Broken Heart)
Oops era:
Don't Go Knockin' On My Door should have been the fifth single, otherwise I'm happy with the singles as they were
My Only Wish (This Year) as a Christmas release
What U See (Is What U Get) - promo single
Britney/Crossroads era:
Remove I'm Not A Girl from the main album, release it as a Crossroads tie in and on separate soundtrack CD with all Britney's Crossroads songs, replace it with She'll Never Be Me on album
What It's Like To Be Me (JT collaboration)
Album version of Boys with Pharrell instrumental
Before The Goodbye as a full single instead of Crossroads songs (which would be on their own soundtrack and replaced with other unreleased songs, either ones we've heard or something fitting the original Shock Your Mind theme)
In The Zone
Breathe On Me should have been fourth single (instead of Outrageous as originally planned because of the R Kelly controversy, which I assume was known about then)
The Hook Up as fifth single
Touch Of My Hand as sixth single
Blackout
Assume there was no contractual obligation to release Radar and her personal life didn't overshadow the album...
Get Back
Gimme More
Piece of Me
Freakshow
Break The Ice (with proper video)
Circus
keep three singles as they were, replace Radar with 3 or an unreleased song. Assume Radar was never a single. I also think Kill The Lights, Blur and Mannequin should have been full singles
Femme Fatale
Till The World Ends
Inside Out
Up n' Down
I Wanna Go
Britney Jean:
Alien
Hold On Tight
Work ***** (as a Vegas promo single, not part of the album)
Glory:
Do You Wanna Come Over
Make Me
Love Me Down
Change Your Mind (No Seas Cortes)
Mood Ring