In many programmes, tall unit fronts can have a continuous deigns, i.e. without any division of the front line. Because fewer joints generally create a more expansive look and thus contribute to the overall effect of a well-thought-out, cleverly planned kitchen.
There are no limits to the interior design. The goal is to make functionality as functional as possible down to every last detail. There are no limitations to how the unit can be arranged inside, regardless of the visual design.