Yes - sabotage the project
Yes - destroy all the equipment
Yes - burn the research
Kill his colleagues? No. Tell them Jenova is an alien and the whole project is a huge mistake? Yes. Kill Sephiroth - yes, probably. It's the same as the "would you kill baby Hitler?" question, but if Gast had killed one baby, countless lives would have been saved. This is what I mean when I say other people died in his place. People died because he ran away from the mess he created.
lol I just imagine Hojo going, "Ohh... That sounds even more interesting!!! Hell yeah, let's go!"
Like, Lucrecia might see reason but that's also her baby. She wouldn't let him kill him. It's a Rosemary's Baby situation, lol. Like, at that point in the research, it's already simply too late. Gast simply realized it all too late. Jenova would live through Sephiroth, Shinra has the research and means to continue it without him. Hojo would
definitely want to continue as would any other lesser researchers, assistants, and the company. And good luck killing Jenova, I don't even think burning it with high-test fuel would fully annihilate it.
I mean, I get what you're saying and it makes sense, I just don't begrudge the man not wanting to go out in a blaze of glory trying to burn down the entire Shinra Manor and ensure the work dies with him, lol
Bugenhagen used to work for Shinra and now he doesn't. In "Picturing the Past" Lilisa is a failed experiment that is allowed to return home into the care of her friend Joann. In the OG there's an ex-SOLDIER who runs a shop in Junon.
To be fair, Bugenhagen is old as dirt, and did his science work a long time ago. And Shinra probably hasn't forgotten about him, he's just no longer an asset worth anything to them given his age and his time at Shinra.
Gast could have
1. Quietly left the project without giving the real reason why. He'd have been under surveillance for the rest of his life, but if Bugenhagen is any indicator, he would have been allowed a lot of latitude
2. As a clever man, he could have figured out a way to destroy the entire project, maybe in a massive lab explosion. He might have been executed for negligence, but it would have been a price worth paying.
You argue that if Gast tried to leave Shinra he'd be tracked down and killed for it. My argument, which you have either misunderstood or deliberately misrepresented, was that when he left Shinra, he wasn't tracked down and killed for it. Hojo tracked him down, and it wasn't even Gast he tracked; he wanted Ifalna, and Gast was to come along as the accompanying spouse. No one shouted, "Shinra deserter, die!"
I think Bugenhagen got a pass because he completed his work, the work was considered no longer useful, and he was simply "released" so to speak. Sorta like how the people who got to "retire" to Banora got to leave. They're under surveillance, kept track of, but ultimately left alone.
Gast basically suddenly quit mid-project, when the work still needed to be done and it was a product of critical importance. Considering he was running across the globe trying to stay as far away from Shinra as possible, that seems as if he was trying to avoid them for his own safety. Especially when he found an actual living Cetra. Shinra has been willing to kill someone on the
possibility someone might leak or tell their secrets out in the open so I definitely don't think they'd let Gast have a free pass if he left his work early.
And I dunno about that, regarding Hojo. If that were the case, why bring a bunch of infantrymen strapped with guns? Was Hojo
really expecting it to be that peaceful? It's a glorified kidnapping upon threat of lethal force. Clearly when you bring lethal force, you expect a good chance of using it.