It's always useful to have some sort of recognition tool on a base.
It probably doesn't matter for ships you'll only have one of (like dreadnoughts), but it's not impossible to have half a dozen or more frigates or galliots of the same class and being able to tell at a glance which one has the speed critical (especially if they're all operating in a pack close together) speeds things up immensely.
For that matter, a local carrierphile has just discovered fighter Battle Shields, and keeping track of which fighters have lost shields and which haven't also takes a bit of work.
Plus, named ships always do better. Unless they do worse, in which case at least you have a name to swear at.
On a related note; just for my own interest I was updating the old ACTA 2E vassal module - just need to finish off the Kurgan and Vuldrok fleets and I'm done.