Pretty sure you guys have heard of Gmod prop hunt, right? Searh up "Gmod prop hunt most intense round ever" on YouTube an that video should be self-explanitory (Warning: The video also has strong language in it, you've been warned)
Anyway, I'm sure they probably made a Minecraft version of this (They actually have), and I think this would be pretty fun to have around; Because why not? Guessing le techs would be able to do this, correct me if I'm wrong but this doesn't sound too hard to implement in my opinion
I will update this post if you guys would like to add anything bellow :) (Already happening)
Update notes:
-Maybe add a timer for standing still, and places your prop (you if you're a prop) perfectly like a normal block (not afk removal, thats obviously needed anyway)
-Cristi