That everyone has to leave at the same time often happens in a family, doesn't it, or do you not do outings with your family? And at least 3 people have to leave together daily when the kids are being taken somewhere.
We also have a relatively large hallway, and I am very satisfied with it. Previously, we had little space, which was quite annoying. I find space in the hallway more important than natural light in the hallway. With enough space, you also don’t stumble over dirty shoes ;). In practice, the kids also don’t put their shoes away in the utility room by themselves.
We seem to be relatively unaffected by this and you can achieve much more with child-rearing than you might think.
But I recall, we had a disagreement before because you didn’t want a tiled niche in the shower… because it occasionally needs to be emptied and cleaned…
For me… well, individually for me… a large hallway wouldn’t have been necessary. Because I’m usually ready 20 minutes before departure (so generally 5 minutes before we have to leave at the latest) and sitting fully dressed in the living room or on the stairs.
I want to emphasize this again because we are giving advice here and some people do rely on you or us.
The debate about whether the hallway is 5 or 10m² is currently an absolute luxury problem. 5m² more costs, according to your own calculations, 15,000+ EUR. For 5 minutes every 2 days when all 4 people are dressing at the same time…
The times when you could say “Well, 5m² more, with 1% interest… yeah, that’s fine…” are over. You need to please adjust your consulting accordingly. Houses with 140m² or less will now be the norm. It’s about optimization… and also compromises.