I'd at least expect the difference in fare reimbursed from J, and possibly some goodwill compensation. The KL cancellation was ultimately outside of CO's immediate control, but travel was arranged and ticketed by CO on SkyTeam partners.

Regarding the "comments to come," this forum is intended for all areas of the customer experience in relation to the frequent flyer community. However, some are quick to point out new members with few, if any posts, that are requesting advice on compensation or similar topics. Just kind words of advice for going forward.