Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

Would this be possible? Perhaps by using the same mechanism that allows mages to rename their familiar whenever they are summoned. Some of these class summons are sapient creatures, such as the palemaster's vampires, who could use names just for RP purposes.

There is the possibility to change the DMFI tool to be able to name your own Summons. I'm not sure why this restriction is currently in place but I suspect there is a reason behind it. Would be interesting to know why

it was turned off because people were trolling/grieving/and other stuff to other players through the creature so it couldnt be replied to or really traced since once you were done you could just change the name again

Would there be a middle ground somewhere that allowed for renaming without the potential for misbehaving?

theoretically if it is allowed only once then there would be no issues, since you would not be able to change the name after you started to sass someone

Perhaps if you are prompted to rename the summon as you summon it, as is the case with a mage's familiar, that will fix the issue?

as long as its only the one time then theoretically yes

the information would need to be saved somehow for the character in the player widget or something like custom descriptions and such