I feel like they dropped the ball pretty hard with OC. The only thing that feels like an improvement over Bozja is the aesthetic.
Phantom jobs are neat, but I actually liked how ridiculous you could get with certain Lost Action combinations. I'm not even just talking about the total cheese shenanigans people used to cheese some duels, but some of the basic combinations were really fun to play around with.
Only 1 FATE and 1 CE being active at a time is pretty lame too since I funnels every single person in the zone into a single train, and destroying FATEs in like 2 seconds. Also removing the queue into CEs I'm a bit mixed on.
No 1v1 duels for people to test themselves, and for other people to spectate and cheer on.
Forked Tower is really interesting, but Bozja had 3 accessible raids in CLL, DR, and DAL. Then having a savage of one with DRS. OC basically just has a savage with FT and one of the worst possible ways to even get into it that promotes being as toxic as possible. How do you start off your new exploration zone with a raid that has no normal option and a simple queue when the last time you did this was so well done?
Reusing Eureka rewards is shit too.
I could keep going, but I'll leave it at that. Way too many steps back and only like 1 step forward.