ESDSWG is currently accepting proposals for new working groups. Proposals can be submitted by any member of the ESDSWG community and may be a follow-on activity to one of the current working groups, a response to one of the ESDIS Priorities listed on the proposal wiki page, or something entirely new.

https://wiki.earthdata.nasa.gov/display/ESDSWG/2017+ESDSWG+Working+Group+Proposals