Does anything change if you fight your way out of Black Sapphire at the end of You Know My Name? (Phantom Liberty)

Just finished the Black Sapphire infiltration in You Know My Name. After Hansen crashes the roulette game and blows my cover, he basically tells V and Reed to walk out peacefully — but the game clearly lets you open fire on his guys in the lobby instead.

I complied and left quietly, but now I'm wondering if I missed anything. A few things I couldn't figure out:

• Does going loud on the way out have any story consequences later (Firestarter, the endings, Reed's dialogue), or is it purely flavor?

• Same question for the roulette table — I noticed the calibration bars fill differently depending on dialogue picks with Aurore and Aymeric, but does botching the scan actually change anything, or does Hansen show up regardless?

• I bet all-in on red and lost. Is the outcome rigged no matter what you pick?

Playing on 2.1, no mods. Mostly asking because I keep a manual save right before the party and I'm debating whether a replay is worth it before moving on to Firestarter.

Short answer: no, nothing carries forward. You can safely delete that manual save — all three of those moments are fixed outcomes, and Firestarter plays out identically either way.

Going through your questions one by one:

Fighting out of the lobby is pure flavor. If you open fire on Hansen's guys, you get a combat gauntlet through the exit (including some drones/mechs) and a short chase to shake off, then the quest ends at the same conversation with Reed. No dialogue changes later, no relationship hit with Reed, nothing referenced in Firestarter or any ending. I went loud on my second playthrough specifically to check — Reed doesn't so much as mention it. The only real difference is you leave with less ammo. Either way the same follow-up quest, Birds with Broken Wings, kicks off after.

The roulette scan can't actually be failed. The calibration bars with Aurore and Aymeric fill faster or slower depending on how well your dialogue picks provoke them, and being too pushy gets you some awkward lines, but the scene always completes the scan and always ends the same way: Hansen walks up, tells you he's known who you are, and "invites" you to leave. There's no fail-state branch where botched dialogue changes the outcome.

The bet is 100% rigged. Red or black, all-in or not — the twins win the round regardless. It's staged so Hansen has his moment at the table. Do remember to cash out your chips at the booth on the way out though, the game doesn't convert them automatically.
One thing actually worth knowing at that save point: if you finished Lizzy Wizzy's Violence side job in the base game, she's at the bar near the exit and hands you the Amikiri legendary headgear — easy to walk past. That's the only missable in the sequence, and even that you can grab on the way out without reloading.

So no replay needed. The big consequence-heavy choices in Phantom Liberty come later — starting with the one at the end of Firestarter, which actually branches the whole expansion. Save your decision paralysis for that one.