Sharon Thiessen-Woods (sthiessen@curling.ca) and Brian Cassidy Sr. (bcassidy@curling.ca) have proposed the Mixed Doubles format calls for the ability to allow hammer-switching mid-match:

"In Mixed Doubles we need to change the hammer during the game. If a team blanks an end they give up the hammer so the team that blanked should now be throwing first (team on the left in live entry) rather than the right."

See ticket #58208