Rewatching Timebreaker, in hindsight to knowing what the watch is, this intro to it makes it so weird.
Specifically the watch's ability to make a hologram.
Assuming this watch was always planned to be the Rabbit Miraculous, does that mean that all Miraculous can make holograms? Or have some unique minor ability they can do and this is what the Rabbit can do?
Which, for something related to time travel, it's kinda random.
Unless Rabbit wasn't planned to have time traveling powers, but potentially, originally was the illusionist instead of Fox.
Which wouldn't be too much of a stretch for Rabbit.
White rabbits are an iconic animal that's tied to magicians, who are expert illusionists.
To add to it, the rabbit is tied the trickster archetype. Europe has tied rabbits to other-worldliness and the fae. And there is an Indian fable of the Clever Rabbit and the Foolish/Hungry Lion. Where the Lion decreed all animals were to sacrifice themselves so he can eat, and when it was the Rabbit's turn, the Rabbit told the Lion that there was another lion nearby, and led the Lion to a well/watering hole and pointed to the reflection in the water. The Lion drowned trying to fight his reflection, saving the Rabbit and other animals from being devoured.
Which a reflection can count as another illusion.
This can even work off Alice in Wonderland as illusions can be tied to dreams, and they can be creative and surreal and strange.
As for the time motif, it can play off time is an illusion.
So IF that watch was always planned to be the Rabbit Miraculous, I wonder if it was originally the illusionist instead of the time traveler; as the ability for the watch to make a hologram is just so random.
As for Fox, given that Volpina "the False Fox" was an illusionist, there was a possibility that the actual Fox wasn't. And Thomas Astruc had confirmed that Pied Piper was a Fox (hence the flute).
Potentially, Fox originally had a power of hypnosis or subconscious manipulation through music, also working off how music can influence you.
Which this ability is what I associate Pied Piper with more than illusions, and it would work better off Fox playing the flute to use the power, as playing it to make illusions is a weird choice. Anyone hearing that music would know an illusion is coming, but not so if the music could enthrall you and influence how you perceive the world, what you register.
To add to it, this can work off the 9 tailed foxes too, I have read that some did have the ability to hypnotize; this can also work off that infamous ability to possess a target, taking over another.
A lot of this is just speculation though.
It's hard to say if the watch even was always planned to be a Miraculous, if the Zodiac were even always planned. Some things just feel like they rolled out and there were definite changes that had been made, some of which I'm sure were done to keep to the status quo easier and not drastically change up the story (like Mayura was built up to be a bigger bad and bigger threat, actually be HM's boss, but nah, that'd change up too much, can't have that).