WGT doesn't really need "actual Majors" they just need to keep producing top quality "actual courses" and create their own Majors.
Set them up to simulate real majors and put up some decent prizes.....have qualifying rounds, but not unlimited play. Maybe 5, 2 round comps that everyone can enter so if you don't qualify in the 1st one, you still have 4 more attempts, all from the same tees, regardless of which, and whittle the qualifiers down to 100 players or so.
Allow all the Tour Legends automatic entry and have the rest fight it out for a spot.
And then set up the "Major" over 4 rounds single play, on varying courses, every 2 months.