A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
OP seems to be concerned about status with DL, not transferring RDMs between spouses' accounts. However, IIRC KE still offers a "family" FF account in their program. OP should check this, although I don't think it's what he wants.
Note also that Reserve card MQMs (15,000 MQMs for $30,000 spend) can be gifted to anyone, including one's spouse, although the MQD waiver goes to the FF account of the person who is the (primary) cardholder.