Alternatively, if the community can start under a related and bigger community, you can do that as well. Then branch out when you get some critical mass.
I sent a message to the owner of /m/hardware to start the fire. He has no comment in 3 weeks of inactivity after he created the magazine, I guess I can wait for a long time.
I've been trying to be active in existing magazines right now. I don't want to be in charge of anything but love to post and comment. I'm trying to focus on supporting the largest one to try to drive niche interest into a single magazine