Well I've been having a pretty easy time finding the things I really needed on all my chars in offline mode. Orpa/Tech PP, Cati/Bullet PP, and Cati/Skill PP saves. I've gotten Shinowa Line for both my Humes and my CASTs. I'm still really just after Rabol Yiel for my beast chars as well as Shato drops and spread needle for my male hume and male CAST, haven't seen a single one for a very very very long time.
I really really hope SoJ releases another expansion pack or even if they shut down the servers they still release a complete offline version like they did with PSO episodes in the past.
I'm at the point where I want to h@x to get those mobs to spawn. So far I've seen buffed bil de vear only once, Delnadians waaaay back when AoTI was first released and rare spawns happened often, I've seen Lutus Jigga a few times as well as Orgdus twice, at least ran into Darbelans 7 times, and of course a ton of rappy and Jaggos. Jiggo Booma I've never ever seen.