and Simply having it designed and built was never an option for me. If you want "your" house, you have to get involved a lot.
But objectively speaking, one has to say that more could be made out of it. I reckon some of us would have actually gotten an optimum with the budget you have, whether you currently need storage space or a daylight bathroom – it would simply have been included along with the rest of the planning.
I’d say this: you can see that in the end an amateur had the final say.
By now, I also see more "small mistakes," which of course are trivial. But windowless bathrooms, a missing spare bedroom, sauna use followed by a shower in the guest room... those are – simply put – planning mistakes that could have been automatically accommodated.
Well, the building looks cool from the outside. And visitors will hardly notice every planning mistake. Probably neither will you. At some point, the odd question will come up. At some point, you’ll curse.