Thematically, I think Jagex wouldn't necessarily mind dabbling in offering up tokens related to the Fort's holiday decorations in the future (unfortunately)
1. While the Fort is the epicenter of the main storyline, it makes a fair bit of sense to focus holiday content there as well (as they have with Pumpkin Pete for Halloween)
2. Someone today purchased the Pumpkin Trees token for 402m... The Fort's decor apparently does set up to be "tradeable rare" material, and some people are into that.
3. Making a "Christmas Tree" takes more than just snow. There's lights, or tinsel wrapping, or ornaments, or presents sitting around the tree. Those non-natural elements are what I would expect to see in a "Christmas Trees" token.
I'd like that, and now I would be disappointed if we don't get something. Maybe there could be additional decoration hotspots where we place statues, flowers or holiday decorations. Maybe some of them could be animated, Halloween jump scares or random appearances by Santa.