122 is a very interesting format, because it was the one designed to produce 'postcard' size prints by contact. My grandparents used theirs until the film ran out, one online source cites 1971. If any extra large roll film format deserved to be resurrected this is possibly the one. How much support would there be for a facility which was geared up to make up these discontinued formats? As we're talking about stimulating film use at all levels, maybe getting film into antique roll cameras would be a positive move?