Lloyd's route is noticeably weaker than the other two. I liked seeing the Crossbell characters/locales that weren't in CS3/4, but it didn't do enough to hold my interest. I suppose it's a testament to how well the duology already handled the essential character arcs. With not much ground left to tread, it comes off as mainly fan service for those who didn't enjoy Crossbell's liberation being told through stills.
C's route is a follow-up that I didn't know I wanted. The group dynamic is great, largely due to everyone bouncing so well off of LP. Watching Rufus get Class VII to do some of his dirty work was a blast, and there was enough 'show, don't tell' to sell how CS4 changed him. Trails at its finest here imo.
As for Rean's route: no more direct connection to the curse, no more Vamilar to rely on and confide in, still an unhealthy amount of self-loathing - there was a clear character arc here that didn't have the payoff it needed in CS4, so it was always going to feel at least a bit like an overdue apology. I'd say it was wrapped up with some proper finesse. Ishmelga Rean is neat follow-up to CS4's 2 endings, and also an easy way to give Rean another opportunity for self-sacrifice, and to provide that closure to his arc by having him reject it and finally acknowledging he needs to prioritize his own happiness from now on. Those were the exact words I needed to hear.
As an aside, one thing I already knew about was the Retributive Tower name change. Disappointing that it wasn't updated in the latest patch, but it's also not the first time a Trails dungeon name was mishandled under NISA's watch (looking at you, thaumaturgical core). Seems like an even more unusual update here considering the localization still references Project Babel.