Now that CCP screwed up the Agency and shows systems with 0 signatures in the list of systems, the 0/counter in general needs to be easier to read at a glance without having to look closely. It was much more intuitive that systems without signatures were not shown in the system list.
Instead of seeing a list that shows you want to see, this new list overloads you with clutter and requires more attention for no added gains or benefits. This clutter with 0 signature systems does not help to make the UI easier to understand and comprehend.