It appears to me the airlines (that i'm dealing with at least) are going out of their way to hide the booking classes so you never know if you 1. accrue miles and 2. build any possible loyalty status until it's too late without havig to do a lot of legwork to find out this booking class information in the first place.

I just had TAP (who I status matched with with Oneworld Emerald AA) tell me my SWISS airlines longhaul expensive return flight segment accrued zero miles, segment or miles status towards TAP because it was booked as a 'K' booking class. There was zero information on this anywhere when booking and on any emails received from Lufthansa (or SWISS airlines) who issued the ticket. The outbound segment on Lufthansa actually earned miles.

So based on reading this thread I need to use the 'ITA matrix' to find out what the booking class is? Sorry for my ignorance but will this matrix cover for a flight on a partner airline issued on another partner's ticket stock?

Can it not be a reasonable request for all ticket issuers to show the booking class of segments so they can make an informed choice? Is that really too much to ask?