After collecting the entire G.A.I.A set of armor, and constructing it I turned the items into Highball at the Cloud9 bar.
He advised me I had gotten all the pieces, and earned myself "one hell of a reward."
He provided me with nothing.
I assumed nothing was wrong, and that the game would trigger the quest end momentarily. I talked to him some more, sold him some stuff, then left for Gideon's Rock.
After entering the Gideon's Rock destination I checked my quest log, and the "Golden Opportunity" quest was showing incomplete.
I took a moment to google the steps required to complete the quest, and I have completed all of them. The guide also noted that "Highball" would be replaced by "Lowball"
I returned to Cloud9 and "Lowball" is now at the bar, stating "You've just missed the boss"
The quest is still showing incomplete.
Weird Aside : When I first reached Cloud9, Instead of going to Gideon's Rock, I returned to Jericho, and went all the way into aid command as far as I could go without keycards. Then I realized I was supposed to be doing Gideon's Rock first.
I don't know if doing things out of order messed up something with highballs triggers, but that's my only assumption.
Luckily, I wasnt a huge fan of Gattermer-whatsitcalled in the first game, so I'm not too upset about this. Just kills the completionist inside me