"I would agree that most of the Lions players would come from within Ireland and Wales' ranks," said Gold, who works alongside Peter de Villiers and Dick Muir in the Springbok camp.
"There are also individuals in England and Scotland's ranks that can bolster the squad."
Whatever the make up of McGeechan's party, Gold has little doubt that the Lions will provide a stiff challenge for his world champion Boks.
"The Lions will be able to field a formidable side," added Gold.
"They can pick some good combinations and whatever 22 they come up with will be a strong one. There will be no significant weaknesses.
"The Lions will have enough talent for us to take them very seriously."
As well as recognizing the strength in depth available to a coach able to pick players from four countries as opposed to just one, Gold has publicly highlighted a number of potential 2009 Lions he greatly admires.
"The Lions will have a lot of depth among their loose forwards, but we also have an embarrassment of riches there.
"They also have a lot of options at halfback. I have a high regard for Dwayne Peel, but expect Mike Blair to start.
"Ronan O'Gara will probably be used at flyhalf due to his experience. I also rate James Hook very highly.
"Paul O'Connell may be the captain. He will definitely make Ireland's side and forms a formidable lock pairing with Donncha O'Callaghan.
"The locks will be good in the air and we are set to play with straight-arm penalties, so I expect a greater emphasis on lineouts than in the Super 14."