I honestly don't see what was so bad about the stamina bar, it allowed you to control the pace and actions during battle without you just watching and waiting to make a move as your character auto-attacked.

I still say had stamina been given a progressive increase as your rank or physical level went up it would've worked and people would've had less complaints about running out of stamina to fast. Cause I am certain that stamina was the same base no matter what your level or rank was but if they threw in a 100-200 stamina increase every 5 levels then by level 50 you'll be able to attack a lot more times then when you were a lv 1 adventurer and it would've shown the character growing stronger and being able to attack more times before being winded and needing to catch their breath.

That's just me though, I hope they at least keep the stamina concept and all the code for it saved under a folder cause to me it feels like Charlie Brown's Christmas tree, it just needs a little love to get the proper appreciation.