You don't think we will just start referencing millisats?
a lot of interfaces already recognize it, just not displayed on regular transactions. Phoenix for example has it.
True scarcity
People who think they’ve missed the boat on bitcoin don’t understand true scarcity.
We’re in the glory days of bitcoin.
Here are my predictions of what bitcoin will be divided into as more and more people start adopting it.
We’re at the SAT LEVEL.
Next will be HALF SATS, a tribute to HALFinney.
As more and more people showed up, they had to change the units of measurement.
It doesn’t really make sense to say that you own .0000001 of a township anymore.
https://www.youtube.com/live/JwilXw89qKQ?si=7zJskFhuWFV2_PPn 
Discussion
came here to say the same. it is more likely that we'll be using milli, centi and the like as opposed to half and quarter. it's a imperial vs metric mindset.
future units aren't likely to be in imperial since those measurements have root in physical space where as metric is more abstract.