I don't know that I'd like a huge number of named NPCs. I think I'd have a hard time making them seem real, and my bad-with-names problem in real life is leaking into the game.
"So, last session Ula was trying to claim there was nothing wrong with the mudfish at the same time she was puking up her guts."
"Ula? Don't you mean Kettle?"
"Yes! Right! So..."
Thanks heavens my players are forgiving, and have good memories. I'm going to make myself a little relationship map with pictures I've pulled off the interwebs, to see if that helps me.