Color swatches in all Affinity products are only a few pixels square, at best. I'd like to see a feature where, if you click/press and hold, it temporarily pops up a much larger swatch of the color you're pressing on.
That pop-up could also include other info such as the color name, Hex, RGB, CMYK and other values, etc. This information can already be accessed through other means, so that's less important. However there is no way to get a really good view of a color, short of a view tiny pixels, without actually painting a large area with it on the screen. (I created and attached a mock-up of what this new pop-up might look like.)
Also, once a color has been selected, or when selecting an object that already has a stroke or fill color, there is no way to find out the name of the color. I can find all the values, but not the name. Mouse hover does not show a tooltip for recently used colors and the color is not highlighted on the swatch panel in any way. Both the mouse hover tooltip and highlighting on the swatch panel are features that could be useful in some instances.