I still keep Refia on my arena team, even though 9/10 matches these days are over as soon as I get a turn. She's there almost entirely to do some emergency esuna/stona/arise if the enemy team goes first. Even though nearly every team now has 1-4 Noctis, I've still never seen him do a single blizzard flask for stop. Lots of fire flasks, but like I mentioned, Refia's immune to it, and she just cures the few people who get a bad status. I gave my Refia golem staff and sunbeam to give her something to do when she doesn't need to play recovery (I sunbeam with her if I go first to blind a few enemies, or melee with golem staff if the only unit standing is a Cecil).
I picked up the xmas bundle, and used the 10 tickets that came with it on the Noctis banner. Still no rainbows, but the 10 pulls were overall very high quality. I got my first Warrior of Light, which was the final "must have" on my wishlist, so now I'm free to blow lapis on whatever I want, or save up for the next big thing. I also got a Cerius, just in case, and a Snow (for his great TM). I also got not one but TWO gold crystal Russels, which was a slap in the face. Up to around 30 summons on this Noctis banner and still only have the one Chizuru. Could be worse, could have been zero, but I was hoping to finish this banner with at least 3 since her TM is still close to top tier in JP (a few are better, but from 5* bases in the future).
There's still 6 days of the Noctis banner, and I'll be using the tickets from the daily 300 lapis bundle on the banner, so maybe I pull a Noctis before it's all over. I may still do a 11 pull or so, but idk, I'm sure he's going to repeat on popular banners down the road, and now that I have Warrior of Light, he's not quite as big a deal for me (he was going to be my breaker unit). I'm going to spend about 4,000 lapis on storage upgrades too for unit/equipment/material/abilities. Probably more than I need, but I don't like the hassle of having to micromanage what I save or toss to always fight for a few storage slots.