Do you even want older content updated?

For me, the thing that REALLY made me shout, "Plum!" about MFPS wasn't exclusively about the withheld content from C&D, it was the release & timing of the whole thing. I had pre-ordered C&D at full price, and was both Amazed and Enchanted at the level of attention and detailing that the two species released in that pack were given. They even had inserted the previously-stated-as-Impossible color wheel system to be able to customize the animal's coats. Even with only the two species having been brought into the game, and the fact that an animal from the pack took a household slot of its own out of the eight that we are given and was not able to be played as they had been in previous iterations.

For me, it was that MFPS was released as a SP at an SP price, SIMULTANEOUSLY as them cutting the pricing of the C&D EP by 50%, so if I had only waited one month after C&D's release, I could have purchased both for LESS than the price of the EP alone. It would not have 'hurt' so much if they had delayed the release of the SP for maybe some six months, to give the appearance that they were or had created additional content to ENHANCE C&D, not brazenly showing us that we could purchase the content that should have been a part of the EP in the first place.