How about swapping some of the controllers at LATCC or Maastricht say with those at Madrid or Barcelona? - we'd see some major changes within days methinks.
I trust you're saying this tongue-in-cheek.
It would probably take 6 months or longer for an experienced controller from another unit to validate. Following which you would have to expect delays through LATCC and Maastricht due to staff shortages!
Hotel Tango, yes and no! I know it takes a controller these times to validate of course but feel that a few guys from LATCC down there would have it sorted within a few weeks a lot better than the current "work to rulers"!