What should I do with my New Year Camilla?

If you happen to have safeguard, that would nicely compliment your +def. I really don't think distant counter is worth it on her, unless she's for arena. With a defensive build, speed/defense bond is nice, as she don't be doubled and will take little damage to begin with. Renewal is great, and quick riposte as a seal work really nicely, and with those two skills slaying edge is nice. You can do a lot of things with her, so just experiment and see what you like. Good luck!

NY Camilla's high defenses make her a great candidate for a QR build. Because her HP is high enough, she can still do well vs mages but you still will want to make sure you deny enemy doubles, especially if they will be using brave bows. It is easy to stack atk and spd in flier teams. A hone and 2 goads can grant her +14/+14 atk/spd. When you have a spare palla, she should carry goad fliers. Flier teams are aggro by nature and will appreciate more damage dealing. But having at least one tank like NY Camilla can help with baiting.

I personally went with slaying edge spd refined along with death blow, desperation, heavy blade seal, and galeforce special due to said easy atk/spd stacking. Also I have a preference for reposition over swap for fliers because of their utility to allow non fliers traverse impassable terrain as well as actually getting out of range from another enemy when I need to.