I think they overdid it a little, i agree with the per pellet basis of it though and a little lower amp damage but the rest is just overkill on it.
Also nice information here.
I should be up to 40k badass rank if i get my 9.5k back from my original Zero!
Restored some lost progress to players who have had their profiles reset. To ensure you are credited for as much progress as possible, please load your character, select "Continue" on the Main Menu, and then "Save and Quit" after you enter the world. Repeat this process for each character in your character list.
Don't really know about the whole no seraph crystals from pt1 bosses its going to be almost impossible to get the seraph guns after this.