That’s such an important point and you are absolutely right that trust usually erodes in the small details rather than the big missing features. I have seen the same thing where businesses assume design is good enough if it looks modern, but users notice friction right away.
What you mentioned about treating design as infrastructure really resonates. A website is not just a storefront, it is the foundation of how people experience and trust a brand. Those small choices in navigation, typography, or page speed speak louder to users than any tagline ever could.
I think more teams need to embrace the mindset of testing with real users early, the way you do in your agency. It uncovers blind spots and shows that trust is not something you add later. It has to be part of the structure from the very beginning.
We’ve found in our client work that the biggest trust gaps rarely come from a lack of features, but from small UX design oversights that compound into frustration. A site might look polished on desktop, but if navigation breaks on mobile or load times drag, users interpret that as neglect.
At our UX design agency, we often run usability tests before redesigns, and it’s eye-opening to watch real users stumble over things a business thought were “fine.” Even something as simple as inconsistent typography or a buried CTA can tank conversion. That’s why in our web design and development projects, we treat design less as decoration and more as infrastructure, it has to carry trust as much as it carries aesthetics.