I only think it's common sense if you've already made the assumption that you actually need to have names visible in PVP in the first place, which is a terrible argument as that still leaves the "why" of it unanswered. Oh, I wouldn't be against name visibility for your own faction mind you, but why do you need to see enemy names anyways? At most I could see an argument for the ability to coordinate, but that's actually an interesting debate in that from one point of view players already have too much ability to coordinate and focus fire as it is. Functionality like /assist is fucking terrible for PVP since you can likely end up with two opposing forced simply trying to alpha strike the opposing team down through an MA faster than their opponent can alpha strike them. In small scale PVP it's not a problem really, but get an appreciable number of people together...and yeah. Take that to an extreme like EVE...
So let's assume that you scratch the ability to assist, just for arguments sake - then you're back to having to call out targets. Which on paper I don't care about one way or the other. But without names, I just can't see that as being a paradigm that couldn't work. You'd probably end up with "Kill that faggot pallie with the T6 helmet" but honestly I can't see it really affecting much of anything besides battle coordination. Which could actually be a goal depending on how you want to design the PVP - people would have to 'fight in the moment' and make educated guesses so to speak, or fight off the more immediate threats that they see, rather than fighting /assist battles or tabbing through targets until they find the last name that was called out.