I've been running a design agency for over a decade and have worked on many redesigns (not involved btw with OP). One common mistake I notice among designers, and something I always emphasize to my team, is the importance of designing for the business, not just for aesthetics. Design is not merely a visual exercise; it's a catalyst for business growth. I can cite numerous instances where simple or even major redesign…
> Spending $100,000 and making two minor changes that triple your revenue is an absolute bargain. This is a qualified statement that really doesn't add up in my head. No minor change is going to triple your revenue, no matter what ui UX designer says.
I've seen redesign fail spectacularly and deliver incredible results - and they were done by the same people.
Sometimes following the best practices makes things 10 times worse.
Even when you throw AB testing and pretend you are following the data, the sample size changes so much you can't be sure off anything. I've seen A/B tested changes winning in the benchmarks perform terribly in the long run.
So would you have the same chance to hit the needed changes to triple your revenue by hiring a developer for 20$ per hour on freelancer? Absolutely, yes.
I'm not spending a penny on agencies, let the big companies do that