I don't really know if we have this mutation yet but I think extra toes would be pretty cool and you could have two extra toes or one extra but that isn't needed. It's called polydactyl. It's not a super rare mutation among domesticated cats but very rare among big cats but not impossible.

There is also a new hybrid idea I have which can be between jaguars and lions. A Jaglion is from a male jaguar and a female lion. From what I can tell from research there are currently two real known jaglions in the world and one has the lighter tan coat of a lion with the black spots and the other has the darker coat of a jaguar but still able to see the spots. They both have the tufts of fur on the end of their tails too. The two of them live at bear creek sanctuary and there are photos on the website. So they are rarer then leopons and tigons at the moment.

the poses could be the jaglion in a stalking pose or lowered head.