I've seen a few people asking where to see previews of the clan arena, and since I already made one in the Time Conquers All forums, I've just decided to make a public one as well. I have bought the few arenas released so far, and have a few credits saved for the next couple releases (even though I dipped into that surplus trying to pull a #Volkan).
I'll try to give a quick description of the interactive features, and the KO animation. Hopefully this info may help influence your decisions on whether to buy an arena skin for yourself or not.
Feel free to add anything I've missed in my descriptions or links to any youtube videos if you've already created that content (@Rowdy and HipHoppa I know you each have some)
Leader Battle Arena:
Unlike the others I have posted, (which are cut-off due to using mobile), this one should be the full arena.
As far as I could tell, the interactivity is limited to sound effects. Tapping the statues creates a metallic sound, the arcade machines and police box create the electric sound, and the vines create the 'toxic' sound.
Once you own a certain percentage of a clan (I think its 80%), you unlock that clan’s battle arena. You can set which one shows by clicking the ‘Game’ tab then ‘Characters’. You can also change it via your profile settings (which is also the only way to re-set the default, or set it to random).