I'm not someone who is constantly playing bedrock, I'm playing java quite a lot more than bedrock lately. Even though I don't know how the bedrock' mechanics works, I strongly agree with the idea of adding the fly feature to bedrock too. I mean, if java ranked players (Emerald+) have it, why shouldn't bedrock players do the same?
Although I have to add that I don't know if it is possible or not since I talked not so long ago with a moderator and they told me that they couldn't (Don't remember which one was the reason).
I'd add this feature for ranked players, content creators designers, helpers... (the whole staff team to make easier their job since helpers have to be monitoring the lobbies as you may already know or if they have to report something to move quickly around the lobbies etc). Perhaps by adding this feature would be encourage other players to get a rank.
This is definitely a resounding yes from me, +1.