Doesn't matter....
I believe you. You have a very thick skin, obviously nothing gets to you.
In other words: You heard what you wanted to hear, everything will be fine.....
No, there was differentiated feedback. Your guild colleague would have had no motivation to just tell me what I wanted to hear. I will not elaborate further. Please no speculation.
This attitude is regrettable, and if you do not want to realize a substandard design, you should reconsider this calmly. It is sometimes difficult to maintain motivation until the end to work out a design thoroughly, but there is no other way..
Of course, the existing good design (I quote you from November "a good basis" ;-O) will be adapted in detail until even the smallest details fit. We are highly motivated here. Believe me.
And calling reasonable planning a cost driver is nonsense. What did your current planner alone budget for the extension of the thermal envelope to the garage? Money obviously is not the limiting factor for you within the usual scope.
I can understand the time aspect, but you get lifelong quality for that.
A second, completely new design planning is, firstly, not necessary in terms of content. And secondly, expensive. I will not give you a price at this point. Just this much: The thermal envelope, sun protection, etc. is many times cheaper.
And ... how you come (for the umpteenth time) to assume that money is not a limiting factor for us, completely escapes me. That is always relative, and of course, like almost all builders, we have a limited budget, even if it is probably higher than the property.
So.... now you may have the last word and be right again.