In todays day & age theres no reason for manufacturers to make KB's that can be modular interchangable....this would let the user be the judge of mixing & matching components within the KB to suit his/her needs as a performer....this would include many various types of plug in modules to create your perfect "Custom Arranger" KB....instead of every few years teasing people along with "just enough features" so that when the next one comes out you have to sell and get another to keep up to date if you want to. Choices, choices, choices, is the wave of the future IMO.