No. You are wrong. When you said this:
You're not missing much. There's no reason to play Gothic 1 once you've played G2.
You were wrong. He would be missing much. There's a good number of reasons to play G1.
G2 fixes most of Gothic's problems, and then ratchets its badassness up a dozen notches.
What were the problems fixed? Mostly things were refined, like combat, graphics. A few different NPC animations were added, but overall, it's much more about different content than changing the gameplay.
The only cool thing about Gothic 1 is just that feeling once you're flung into the colony.
No, wrong. That is not the 'only cool thing about Gothic 1'.
To name but a few things one would miss if one just played the sequel only:
- The first episode, and the second episode was also cool, even if it was similar across camp choice.
- One of the coolest, most believably constructed dungeons in gaming - the vertiginous Old Mine.
- The extremely cool Sleeper camp, with its kooky followers and atmosphere.
- The central plot mechanic - escaping from the prison - being more compelling than G2's 'go get the bad guy'.
- The cool barrier effect in the sky and when there were storms.
- Non-combat dealing with Ur-Shak and the Orcs once you get the 'ambassador' amulet.
Gothic 2 is better than Gothic in almost every concieveable way.
One may think this (I clearly do not), but it's a very different thing to saying 'Gothic 1 has nothing to offer if you play number 2'.