Remove the gable roof and construct a hip roof, flat roof, or shed roof

The extension should be built to the right of the house. Size 4 x 8.5m. On the floor plan, basically the right part where the dining room and kitchen are.

Light gray are the current walls that would need to be removed.

Light red are walls that would need to be newly built.

Can you provide photos and drawings for better understanding?

Follow the quotes in post #2 and you will get to the other threads about the object.

Maybe the dormer and the extension could look similar, then it would already look better!

Yes, that would be the most elegant. A dormer starting from the "daughter" room, then carry the roof profile including the dormer 1:1 into the extension and also end the dormer there a good way before the verge.

We are seriously thinking about plastering the facade.

I repeat: SACRILEGE !!!

Painting over the bricks COULD also look totally bananas, right?

Only paint over individual bricks (virtually as "pixels") matching the (for example gray) bricks of the extension.

We are also aware that this will be particularly expensive!

You don’t have to make it expensive, but you can also follow my advice.

And get used to — also for the benefit of your own imagination — finally stop drawing the old outer (and future inner) wall so thin in the remodeling plans!

Follow the quotes in post #2 and you will reach the other threads about the object.

Yes, that would be the most elegant. A dormer starting from the "daughter" room, then carry the roof profile including the dormer 1:1 into the extension and also end the dormer clearly a bit before the verge there.

I repeat: SACRILEGE !!!

Only paint over individual bricks (essentially as "pixels") to match the (for example gray) bricks of the extension.

You don’t have to make it expensive, you can also follow my advice.

And get yourself accustomed - also to the advantage of your own imagination - to finally stop drawing the old exterior (and future interior) wall so thin in the renovation plans!

Yes, the idea with the dormer sounds great, thanks!!!

How can I imagine the individual pixels?

Haha, I’m already glad that I managed to make such a drawing :D Art grade 5+ in high school :D, you have to manage that first!

Yes, the dormer idea sounds great, thanks!!!

I actually already suggested that in post #2, just not so classic then.

How can I imagine that with the individual pixels?

By painting individual bricks with clean edges taped off neatly with painter’s tape (a little bit over the joint, I can show you the detail), you choose the color tone based on the bricks of the extension. And then basically like a normal "color gradient." I would first blend irregularly and then "mist" "splashes" in the form of individual brick pixels. If you like, you can repeat this on the entrance gable, for example at the corners. Looks smart, costs little. You don’t always have to make a fuss, you never have to worry about a too shallow reach into your pocket when building, the money somehow just flows away :)

Light gray are the current walls that would need to be removed.

From the picture, the extension makes sense and results in a new house,
but removing the old load-bearing wall on the right seems questionable to me and I would rather see a wide passage.

but I consider removing the right old load-bearing wall questionable

I would escalate that to "excessively uneconomical," but I believe in the good in people ;-) and therefore in a mistaken impression due to poor drawing skills.