As others mentioned, it was introduced over time. But if you want to you can still do these things. The mechanics are still there and the drops are as well. Just the cloud is less toxic and you couldn't get inside the red core cloud. Simply don't equip CSLs or corrosive cargo racks and grab a few caustic things and kill the mines for their drops. I forgot how many you needed of each but that information is probably out there to be found.The prior version sounds really EPIC and , well, dangerous. Any idea why it was changed?
It was a fun activity full of lip biting and hoping you'd make it back to safety before caustic eats you up.
Simply ignore all the other ships in the titan area, except for the titan. Don't attack anything that moves basically. Do your thing clogging the vents flip over to the other side hit the core, tanking the scout damage (and if unlucky interceptor damage) and go out into the asteroid belt once the core retracts. The goids won't follow you after about half way into the asteroid belt. If you are unlucky you might die yes, but that is just part of the deal. Respawn and repeat.At either case, its practically impossible to get close now, and if you get close you are gurantueed to die.