Teach your developers about aging eyesight
Because a typical person's interest in their ancestors typically increases dramatically when their parents are gone, people typically pick up the genealogy bug when they are a bit older, so it really is important for your site to be senior friendly.
The new design makes heavy use of pastels to differentiate screen elements. Seniors tend to see all pastel colors as white. So for example we don't see the button shapes around the filter words.
People with aging eyes typically have problems differentiating blue, green, and purple, as they all tend to look gray.
People with aging eyes tend to see halos around white, so the edges between the pale colors are blurred, and makes it very difficult to detect/read thin fonts. Especially if the fonts is in a pretty gray instead of a harsh black. It also makes it really difficult to find where the white on white controls are, because the edges are blur to blend any color differentian that we are able to percieve.
People with aging eyes often suffer from glaucoma which narrows their field of vision, so when the fields they are looking for keep jumping on the screen, this makes it a very difficult experience. It is much easier if a person knows WHERE to look. But every time you turn around, the fields are on a new place on the screen. Top, Side, Scrolled off.....
Lots of older people tend to have a touch of vertigo, and all the motion on the new screens, tend to make them dizzy although it does draw their attention to the fact that something changed when you drag in an overlay with animation.
Look at the old site, it didn't have excessive motion, the controls were visible, it was easy to use, it didn't have a lot of exciting visual effects, but it certainly easier to use. We could see all the search criteria on the screen at the SAME TIME, and change it there too, without all this jumping around of screen.
Now you have to hunt for the features, that were once so easy to access.
While the new site works okay on an iPad held in portrait mode, the majority of us still do our serious genealogy work on a traditional computer with keyboard and mouse.
Get your grandparents to look at this, and see how they like it.