I love the watches, but having my home town on it would be great.
Also, even though a purist would not like this, the option to update the city ring if countries change there time zone. Once the ring does not represent the true time, it’s no longer functional and only romantic.
Last improvement. Breitling has some WT that have an arrow and red dot feature to describe areas that observe DST. There watches are too large IMHO, but that was a smart feature.