Originally Posted by bhomburg

OW has just introduced an extra baggage benefit for their mid-tier (Sapphire, 50k) elite level: FT thread, OW press release, and the fine print.

Star Alliance does not offer an equivalent baggage benefit for mid-tier elites.

You will not get lounge access on domestic itineraries flying AA/US unless you purchase AA lounge membership or get the AA Citi Executive CC ($450 annual fee).