@guardiancsgo @G2kennyS You can already do this within the Steam client:
Open Steam > Edit Profile > Privacy Settings > My Profile: choose "Friends Only" or "Private".
This will hide your game details (achievements), friends list, and Inventory (including Major trophies).
@MrDeltoric @Nors3 @guardiancsgo @G2kennyS Hiding your Display Items does not stop stream sniping since those players have already gotten into a match with you.
Stream sniping can be reduced by hiding your screen when selecting maps and queuing. This way players can’t match these settings and get into the same match.