Board Thread:Plants vs. Zombies 2: It's About Time/@comment-26368790-20150504084253/@comment-25089892-20150509183315

Xenons wrote: Zombotanist wrote: I'm just going to say this: I doubt new worlds for PvZ2 will ever give us more than 5 plants, just think about it. Why did the first 4 worlds give you so many new plants each?, because you didn't have any plants before!, they needed to give you a lot  plants for you to have a wide selection of plants to use, but now you already have a lot of plants to choose from so adding way too many new plants per world would easily get overwhelming for the player, (and even more for the people at PopCap that would have to think of new, interesting and useful abilities for these plants, not to mention designs for each of them). They still don't have an excuse for not bringing any PvZ1 plant in FC.

Because they assumed none of PvZ1 would be fitting/useful for this world.