the problem is, as scarlettblue said, that the feature unbalances too much the game towards attacking stats.

after is introduced you will lose in 10 seconds even with somebody that owns only 10% more power than you if he owns initiative over you and is ultrabuffed, not only against who owns 50k+ more power than you.

the feature makes literally useless and unviable any kind of defensive/healing lineups even if you are on par or slightly higher power than your enemy.

everybody will be literally compelled in choosing the overstacking move 1 policy and to choose only ninjas with high scaling standard attacks/mysteries (so edo hiruzen or agk will be good, 100 times better than now, while naruto six paths or jonin minato won't be good, just to state it brightly).