The main thing to remember is showing the pda to korshunov actually opens up more options than it closes. You'll get instant access to the ward badge which lets you move around restricted areas way easier and the soldiers won't give you trouble anymore. Plus, you get your hands on this pretty sweet combatant akm-74s rifle early on, which is definitely worth considering.

Here's what you should know - the moment you show him that pda youll jump straight into the hot on the trail mission, letting you skip the whole heavy burden quest stuff. Some players worry about faction relations but honestly, its not that big of a deal. Sure, spark members might give you the cold shoulder for a bit, and scar's people won't be super friendly, but you can still do all their missions later.

Something interesting - having that ward badge makes getting through those high-damage zones much easier since you can use places like stc malachite as safe spots. The whole thing probably saves you like 40 minutes of running around doing heavy burden tasks, which is pretty nice when youre trying to make progress.

Look at it this way - youre not really closing any doors, just taking a different path to get there. The other factions might act a bit different towards you, but thats actually more interesting than game-breaking. You'll still get to experience everything, just from a slightly different angle.