I just read a Sticky at the "Indoor Gardening and Houseplants" forum entitled "Myth: This Plant Likes/Prefers to be Root-bound -- [Sticky]" by tapla. He claims that no plant ever prefers to be root-bound (or pot-bound). I know of no other plant where growers seem to agree that plants actually prefer to be root- (or pot-) bound than hoyas, with the possible exception of palms and catii. Are hoyas another possible exception or are they part of the Myth?
This authors point of view is that when we so stress a plant, even to induce blooming we are doing what's best for us, not what's best for the plant...that a plant will always do better (i.e. grow faster and healthier) when given more root space.
I think this a valuable subject to revisit now and then. Please take the time to read this point of view and comment.