Question: reusing NPCs?

I'm creating a bunch of NPCs in my D&D5 game, which is intended as a one-shot, but part of a series of one-shots set in the same world. I'm not ready to start the next game in the series, but I am thinking about it. As I think about it, I wonder:
Can I use NPCs in multiple games using the same system?

Or are my choices limited to:
a) removing an NPC from one game and then adding it to another,

or

b) creating multiple instances of a given NPC, one for each game?

Right now, its one per game, but NPCs should be allowed in multiple games. It makes sense.

I'll have to think of new logic to allow that.

While we are making requests, I'd like it if my character database was group first by type (so characters in a section at the top, then npcs separately below). As it is, I don't create as many npcs as I would because it will clutter my character database and make it harder for me to find my actual characters when I want o reference them for games I'm in.

Agreed! And the ability to move characters to retirement status, instead of just deleting them. I don't want them cluttering up my page, but I don't want to totally remove them.

*Rohit reconsiders his feature request policy...*

You need a team of web designers! If I knew anything about it, I would totally volunteer. Just take it as a sign that people love GP and want to see it improve :)

Had I the time to learn Angular, I'd totally volunteer. But I only know a bit of PHP, Perl, and Python.

I know Photoshop, HMTL 5, CSS 3, and enough about programming to at least have input. I don't know Angular though. I am more of an interface/design guy then a coder at this point. I can volunteer a little time, if you need some help with something I would be happy to at least try and help.

ON-TOPIC: I agree with a separation of some kinds as well. Sorry Keleth. :)