When working with the modern MPC line... I'm often thinking "what do I not need" because the MPCs with the plugins and effects and mixer and all... covers so much ground...
When working with the older MPCs... I'm often thinking "what else do I need" because the older MPCs do bring solid sequencing and sampling to the table... but until you build up your sample collection you'll need stuff to sample from... and the limited effects/mixing options generally means you'll need to bring more to the table...
especially as you move through sampling -> sequencing -> arranging -> mixing -> mastering...
Neither approach is wrong, and it's more about where you see you fitting in, and what your habits are. And as mentioned... there's clearly a place for both in your home and in your heart
