I'm not a programmer, but I suspect it would be fairly easy to add some small cosmetics to attach to your dinosaurs.

For instance, I would love to unlock a pumpkin head, or skeleton skin for my Indominus to wear into the arena for Halloween. It would be even cooler if it was behind a boss fight or a strike event so you get to earn it without having to spend actual cash.

With Christmas and Thanksgiving coming up I'd like to see a Monomimus Turkey skin, or replace the Allosino's crest with a roast turkey, white booties and all.

If these ideas don't inspire you, what about a Stegod or T rex with a little Santa hat? Rudolph nose on Stegoceratops? If they went forward, would this be a complex implement?