Beautiful new L-shaped kitchen, new construction, no experience

Steam ovens do not have pyrolysis. In my opinion, this is technically necessary.

We have an oven with steam boost function and pyrolysis (also Siemens). The steam oven is hardly ever used for baking or roasting and does not need pyrolysis since nothing sticks.

What do you do with a warming drawer?

Besides using it for letting meat rest, I also use the warming drawer to warm plates and keep food warm when someone arrives late or when I mess up the timing while cooking and one part of the dish is finished too quickly.

Built-in coffee machine... well, in my home office 5 to 7 Americanos are made a day, my wife also drinks a lot of coffee, guests too.
And a fully automatic machine takes up a lot of space on the countertop.

The fully automatic machine is not my alternative, but rather a portafilter machine.
Most fully automatic machines I know are only properly maintained from the outside and mold inside. People often believe that the cleaning function is enough for a clean and healthy operation. As a guest, I often reject coffee from fully automatic machines not only because of the taste but also due to my combination of imagination and machine knowledge.

The second oven can also be chosen only 45 cm high and with microwave function.

Yes, the steam oven can be smaller. I see the microwave function more in the "large" appliance.

The dream would be a vacuum drawer underneath... But that is really pure luxury and correspondingly insanely expensive.

Vacuum sealing is great. I need it rather rarely and have a device for it that I occasionally place on the countertop and then put away again.

I'm still confused about the arrangement of the dishwasher. You might be placing the items to be loaded across the sink/washbasin there.

That will drip over the floor. You can do it that way, but it's not really good. With a new kitchen plan, I would do it differently.

Dishwasher always near the sink. Rinse briefly (if necessary) and into the machine.

The dishwasher is almost directly behind the sink. According to the plan, the right tall cabinet next to the fridge.
We didn't want it next to the sink because it should be at mid-height. That's why the dishwasher is in the tall cabinet. But yes, something can drip on the floor there.

: You commented that completely correctly. Whoever has such "problems" is lucky. Of course, one oven is completely sufficient for a kitchen, and we should keep things in perspective. My enthusiasm sometimes leads me down certain rabbit holes, and from time to time I drag someone along with me. As builders, we are all privileged – that must not be forgotten amidst all the additional wishes and detail wanderings.

Ultimately, the rule is: I’d rather cook happily on a 10€ stove in the garden than be dissatisfied in a "unfortunately only almost perfectly equipped" mega kitchen.

The dishwasher is almost directly behind the sink. The plan means the right tall cabinet next to the refrigerator. We didn’t want it next to the sink because it should be mid-height. That’s why the dishwasher is in the tall cabinet. But yes, something can drip on the floor there.

The arrangement is not ideal but the best solution if raising the height is of utmost importance. Everyone is different there. We gave up the dishwasher but we are only two people anyway.

You commented that completely correctly. Anyone who has such "problems" is lucky.

All good, I actually found the sentence about imagination and insight into human nature genuinely funny.

Dishwasher always near the sink. Quickly rinse (if necessary) and put in the machine.

Why quickly rinse? Ideally, put leftovers in the trash, preferably pushing them into the MUPL, and then just put them in the dishwasher. No need to pre-rinse.