No need to worry, it doesn’t affect the module at all. And Gonk is an NPC, not a placeable. It spawns via a script that fires once Sasha is spawned (or through a dialogue option with her, if loaded on a save where she’s already present). It should be quite compatible.
This is super nice to have. Though there's one tiny thing that bugs me:
"Explain something to me." A very curt line that I believe lines up very well with Atton's character, especially before you know anything about him (or change his mind on a few things.) It's a scene I always come back to when thinking of Atton's character.
Maybe it could change depending on the player's gender or influence with Atton at the time? Because "I don't understand something. Maybe you can explain it to me," reads a lot more like he's trying to keep respectful.