I watch many DayZ streamers on Twitch.tv and what gives a bad vibe to the game is how people (sometimes hackers) can easily find the server they play on to ruin their gameplay.

My suggestion is to remove the ability to scan within servers to find players by their names and/or Steam accounts.

Many other popular games already have streaming friendly features like this to prevent stalking/stream sniping players.(CS:GO, Rust, H1Z1 to name a few examples)

One very popular website that currently "crawls" player names on DayZ is Gametracker.com

There is no good reason for a server to "show" what players are currently on besides to those you are friends with on Steam that are playing DayZ and to whoever is currently playing in the server as you are.

Prevention for stream sniping = quality DayZ gameplay on Twitch = profit