True, and I agree the Nashville club needs a major expansion, but 10,000 sq ft is a lot for spoke (I don't even think some of their hub Sky Clubs measure at that much). If it were 6,000 sq ft, that would be different,
DL has Sky Clubs at some airports other than its current hubs or focus cities, including at ORD, DEN, DFW, FLL, IND, JAX, MEM, MIA, MKE, MSY, EWR, PHL, PHX, PDX, SAN, SFO, TPA, and DCA. There is also a DL Sky Club under construction at AUS that is scheduled to open this summer.
I know that DL has Sky Clubs at non hub/focus city airports, but I am saying Nashville getting a 10,000 square foot club is pretty excessive for a non-hub/focus city, unless DL has bigger plans for Nashville long term.
I think, though, that you're ignoring the broader reality of the BNA Sky Club versus many other outstation clubs. The footprint is essentially the same as it was 15 years ago, when BNA was pretty much just another station in the southeast for DL. Relative to the size of the airline/other stations, BNA was actually larger for NW than for DL pre-merger. It was one of the few NW outstations in the non-Florida southeast not outsourced in the 2005 bankruptcy. So, DL added tremendously to its passenger base with the merger but did not add commensurate club space.
Over the next decade, DL effectively expanded numerous outstation clubs through a combination of relocating into NW's larger spaces (e.g.
ORD), relocation into other larger spaces (e.g.
MKE), and new terminals (e.g.
IND, JAX, RDU). BNA needs to catch up.
While I'm not sure of timing (though it won't be next week or likely even next year), DL is going to have a TATL flight at BNA at some point. That's the obvious next legacy TATL flight. That, too, requires club space.