Finally got round to clearing Castrum, wasn't as bad as I feared at all. WAR with Deep Martialist (Nascent Flash is so good), Cure IV and Raise was the way to go for me. Plenty of dps for the dps checks, very hard to kill and good support. I'd bring it over a dps anytime until I know the mechanics perfectly.

Overall Bozja's been a good experience. Story was decent, Castrum was fun, CE's were a challenge, far less tedious than Eureka, nice rewards. I enjoyed it.

There's still a bit to polish though. I don't see much point in Castrum after the first few runs, +7 Haste from a full Bozja set is nowhere near as impactful as Eurekas Elemental bonus. Relics are still too easy to get from HW Fates compared to Bozja giving even less reason to go in there long term. 1v1's are wasted potential, great content that you barely get to try. They need to stop with fireworks, it's basically a 66% chance of an empty chest. Some FATE's have really wonky scaling and die in under 60 seconds, others take 10 mins+ (one time I watched NPC's actually clear a FATE alone in under 2 minutes. A few of the Essences are tuned badly, Essence of the Irregular being unusable for example. But it was nice to see them adjust the Castrum registration, so it feels like they're doing their best with feedback.