What do you guys think about a Battle Reset Button (abbr. BRB)? Essentially, what it would do is allow the player to immediately restart an ongoing battle, just like when you reset a GBA Fire Emblem game during one of its battles. The difference, however, is that the game will also reset the RNG state. This will, in turn, start a new battle that could change certain outcomes without changing any data beforehand.
What if you were in the middle of a crucial battle and miss a 89% hit? Maybe you got hit by two 30% hits in a row and desperately want to dodge the 3rd one? Perhaps you don't want the enemy to crit or activate a certain skill? Or maybe you were careless/bored and forgot about a unit or two? The BRB would allow you to re-roll the dice and hope for a new outcome. It would work only once per battle per Player Phase and only once per Enemy/Other Phase. Once the battle is reset, there is no undoing it.
I wanted to hear others' opinions on this idea. I have my own thoughts on the matter, but I'm not just making a ROM hack for myself to play. What do you guys think? Is the concept of a BRB a good idea, a bad idea, or a completely unnecessary topic that didn't need to exist?