So because I am only level 19 on bedrock I don't know what I'm talking about? Please don't make assumptions. I HAVE played Java longer than Bedrock but that doesn't mean I main Java. I think it will solve the problem, Prot V has barely changed a thing on bedrock after playing some games. Adjustments to the weapons could be good enough, more attack damage could become an issue. If your in leather vs someone with iron in a diamond sword more attack damage would make the fight way more one-sided, not that it already is. The unseen benefit of being able to live longer and not get absolutely rekt if your not as good as your opponent is not a bad thing, even though that's not something I need.
Ok, it was just an idea. Or they could just add the unbreaking without extra cost.
As someone who has played over three thousand games of Eggwars, there is a big difference. Things were fine the way they were with protection IV. The fights take so much longer and new weapons and armor must be purchased after nearly every fight. It slows down the games--armor should've never been buffed in the first place.