Merry Bay King is a living legend. The second Hall Of Fame inductee ever carried his class into the breeding world, and the quality of his offspring cannot be overstated.

Impressario - HoF inductee, rising sire of stars himself, 2x Horse of the Year and multiple award winner, 4x Breeders Cup winner over various distances and surfaces, Triple Crown winner, etc. etc.
Simply A Flyer - HoF inductee, 5x award winner including 2x filly of the year and horse of the year, multiple races of note won
Once Upon A Dream - best 2yo filly, best 3yo filly award winner, Breeders Cup winner, won many races of note, ended career as a grade one
Lawliet's Girl - best turf horse, best older mare award winner, grade one winner of races like the Universal Cup, Cox Plate, Pegasus Stakes, Tropical Rainforest Invitational etc. etc.
Bank On Greatness - G1 full brother to Impressario, best older horse award winner, 3x Breeders Cup Winner (Juvenile, Dirt Mile, Marathon) among many other accomplishments
Euphorion - G1, winner of the Valorizzare Derby and big time contender in the top dirt races
No Wonder - G5, winner of the Summer Cup Grade Five Turf, inactivity and other problems stunted career

A Royal Legacy - young son of Queen Of Hearts is currently racing

Clearly, Merry Bay King is a breeding legend and there is no reason why he shouldn't be inducted into this Hall.