You should be able to select people to a CS or a party instead of having to choose “invite all” or “one at-a-time.”
When you invite someone, you should be able to choose multiple people at a time. The only choices right now are inviting all your friends, or invite only one. Being able to pick multiple people at a time will save a lot of time.
This is a good idea when you want to invite only a few friends in your list. Right now, if you want to invite a few people, you have to invite them individually, which takes a long time.