Unfortunately, that is not possible.
We develop the different modules to offer a way to control the budget and customize the keyboard with various options.
Choosing one over the other means the keyboard is assembled with different components, like the base or the electronics. Updating and modifying those models implies, in most cases, making a new keyboard.
We understand that it would be great if the keyboards could be updated, and hopefully, someday, we’ll be able to do it. We’ll keep pushing for that goal, but it’s not doable for the time being.