It is actually quite great. it shows the following:
1. Timer for the Yellow zone
2. Discovered drop zones on the mini-map (permanently)
3. Allows you to pick your progression ahead of the fight (Press "N" during the initial countdown, then "Настройки")
Yes, it is in Russian
Please add Battle Royale mod from ProTanki. This is a mod specifically designed for Steel Hunter game mode. The mod was just added to ProTanki modpack 2 days ago.