Aerith is unreal, shes an excellent support character i'm so glad her LD dropped, shes always been an excellent support anyways but her LD pushes her right up there.
Guy had an event, he will come back as a lost chapter 6-9 months down the line, he's good at what he does but there are other units that do better however if you lack support with tanking capability then he's brilliant to use.
I love Ceodore I pulled for his full kit when he was released, I do think you need his full kit, LD included to get the most of him, he's an excellent unit but he can be rather situational as hes locked to the holy element, his awaken ability needs to be maintained also otherwise his HP takes a massive hit if it drops of and unfortunately without his LD is is much harder to maintain.
Vibra plus+, his ex ability is based on the party having full HP to unleash the biggest amount of damage possible otherwise its not just as powerful so that's something else to watch out for.
Saint's blast is holy based as well, he can't imperil or enchant the party with holy however and for this reason he pairs best with P.Cecil who can do that as well has maintain the party's HP to help him hit Vibra Plus+, he can double up as an emergency healer if you need him as his AA allows for HP recovery, again without his LD however it does massively reduce his capability as a healer.
Definitely level Emperor and Celes up, Celes is amazing with her rework and LD. Emperor's rotation in generally LD useage for delay and to give him hp+++, his Ex when it charges and then HP+++ to keep activating the traps, he pairs well with other delayers to keep the traps active.
I'm onto working on the Gabranth banner for it and the only thing I still need is Gabranth LD and Cecil Burst 
