I've had plenty of years where I had one or two fandoms where I wanted to nominate only one or two characters, and was open to suggestions for the others. If I didn't coordinate with other people, I tried to pick characters that I thought were less likely to be nominated by someone else.

I've also had a couple of years where I missed nominations week, and was very happy for a broad range of fandoms and characters to choose from.

That's all I thought was being suggested here - if you've got extra slots, consider nominating marginalized characters so they'll be available for those who want to request or write them, but don't have enough slots to nominate them.