I would love to see more tree mounts in game and some flammable ones as well.
I would love to have more than one tree mount, maybe a fire tree mount, void tree mount, fell tree mount or a nightmare tree mount.
There are players as well who missed out on the tree mount during/after Shadowlands.
Perhaps the new tree mounts can be customizeable.
That would be a win, imo! Great ideas.
Edited to add: It would be pretty cool if we could decorate them for holidays too.
I’m down for this. But they probably won’t. As this model at least is freaking huge. Blizzard only releases mounts that can’t fit through arches and doors once in a blue moon
This is what I meant by customizations for the tree mount! 
I liked the pimp my ride dragon idea and didn’t have a dozen other colors to switch around on my action bar.
I hope they continue with something similar in TWW for future mounts and different models.
This is sus coming from a forsaken
Correction:
Coming from a Wizard of Oz undead witch.
Put a goblin rocket on the ancient’s back and make it a flying mount.