Uranus is one of the slower moving planets. It stays in a sign for about seven years, which means it has a long time to work it’s mojo. But that also means that as a sign, it won’t have as big of effect on an individual chart until we consider which astrological house it lands...
It’s the first planet that can go retrograde (the Sun and Moon never do). Keep in mind that when Mercury goes retrograde in a natal chart, the energy is turn inward. Instead of being outwardly expressed, everything in internalized. And yes, in some cases, a retrograde Mercury placement ...