Asymmetrical facades as the preferred choice?

I am not particularly familiar with experts. Regarding symmetry, I regularly point out a) that it can be overdosed; b) that it cannot replace proportion and other aspects/dimensions of aesthetics, but only complement them; and c) that when overly prioritized, it is excellently suited to compete with nobler values with deadly consequences for planning quality. With a poison cocktail with the main ingredients symmetry and straight stairs, you can turn a beautiful house into an "instead villa." Golden ratio / Fibonacci, Collatz, Euler, ... - You better plan the extension harmoniously. Hopefully you don’t seriously mean this Frankenstein extension: the knee wall only in the extension is just not acceptable; plus the window formats that don’t pick up the scale of the main house. Also floor-to-ceiling, eieieieieiei ouch ouch ouch. And then the horizontal format in the upper living space - helloooo!

How would you have done it?

that was your question, to which both Ypg and I pointed out that we would not heat the house with 2 heating systems (radiators and underfloor heating). Since these systems usually require different supply temperatures.

Can someone explain to me why I pay €4,000 to an architect and he doesn’t tell me something like this? [...]
4. Building permit is there, there is not much room for changes anymore.
maybe I should have consulted the forum earlier. How would you have done it?

What exactly is the problem with the knee wall? Too small? Too high?

There are two steps down to the lower part of the extension.