Hi Ewa,
I'm pretty sure I wouldn't want to chair on my own (honestly I'd prefer to help mentor someone else who has the title of chair), though I do have ideas around promotion and I'd still like to be involved as a co-chair.
I could tweet to ask whether anyone is excited enough about the open spaces to consider volunteering as the open spaces chair? I could take folks who reach out to me and send the responsibilities involved to them and see who wants to take it on. I would guess there's folks who might be interested in volunteering to help, but don't know there's an opening they could help with.
Would you like me to tweet to gauge interest?