Not against this comment at all, just trying to add to it. Good gear is totally worth it in the long run.
Have you noticed the equipment improves as does our knowledge?
I tried to learn as much as I could before I built my first brewery but I discovered tweaks and changes to make etc as I started using it. I don't think there is a perfect home-brewery design, I think it comes down to what is perfect for you. I also think that this changes over time.
At least this is my justification for seeming to continually spend money on my brewery!