Reminds me of a cocktail fruit tree. I would be hesitant to put all my eggs into one basket, and have one plant contain all of my genetical material. I have had plants mysteriously die before, or freak accidents happen, and if your one mother dies, it hurts even worse. If you have multiple mother plants, you run a lot lower risk of losing all of them at once. I recently was very close to such a disaster, my main mother plant died back 3/4 of the way after being stored in a car all day due to a sudden emergency. I almost have the thing back to health, and have several new plants started, but that experience really showed me how suddenly you can potentially lose your crop.