I am not sure why you moved Civil Liberties to be dependent upon Fission.
The original dependency, Mass Media, seems much more reasonable.
Before talking about the tech Civil Liberties, here is a screenshot, showing RARR in era 4 with England, that is not only a 'first glimpse'.
Era 4 now has two levels of nuclear attack submarines, two levels of nuclear bombers and three levels of mobile AA units. Besides the tech Rocketry now beeing a prerequisite to tech Fission the new tech Modern Air Defence was added and the tech Civil Liberties was moved to another place in that techtree.
There are several reasons causing the movement of tech Civil Liberties:
1. A problem of space in the techtree and
2. The 'inhomogenity' of that tech and the wonder it is holding.
In RARR 1.6 Civil Liberties had to be set as one of the prerequisites for the tech Vertical Flight, what was done, to give the jetplanes coming with tech Supersonic Flight some place 'to act in the game' before becoming obsolete with tech Advanced Composites. In my eyes this setting was even worse than making tech Fission a prerequisite to tech Civil Liberties.
The next version of RARR introduces a new tech Modern Air Defence that in my eyes is fitting much better as a prerequisite to tech Vertical Flight than the tech Civil Liberties and, as the new tech has some other prerequisites, this setting gives the jetplanes coming with tech Supersonic Flight even 'more air to breath'. Of course that new tech needs some place in the techtree of RARR in era 4.
In the planning I made a drawing how tech Civil Liberties would look in the game, with tech Mass Media still beeing a prerequisite for it. The result in my eyes was in the optics really ugly, especially letting next to no place between the techs Civil Liberties and Mobile Warfare.
Before discussing where to move the tech Civil Liberties (or to skip it), let´s have a look at the civilopedia description of that tech:
When reading this, I have the feeling, that such a tech belongs more in era 3 than in era 4. The Universal Declaration of Human Rights of the United Nations in 1948 is the last of the facts listed in that description - but the focus of the wonder coming with that tech was later than 1948.
When having another look at the techtree and seeing here that big free gap near the tech Fission and in the techbox of the tech Fission the GW United Nations, I recognized, that this is the best place for the tech Civil Liberties in era 4 of RARR and the GW coming with that tech should be renamed to 'Universal Declaration of Human Rights'. In my eyes the techtree of era 4 'was crying' to set the tech Civil Liberties to the place where it is now.