You make some great points, Winston. I have toyed with the idea, especially when I want to write about something that doesn't look like a good fit for any of the publications I am a part of. I wonder how much extra effort is involved in starting and maintaining a publication. At least I have the name ready! :-)
One question occurred to me: sometimes when we publish a post on our profile and a publication approaches us, asking us to add it to their pub . . .and then we consider that. Once we have it on our own pub, we miss that chance, right? Especially if it is a publication we've been wanting to write for? What do you think?