Rome never fell.
It just became more German-Celtic, collectivist, peaceful, and good.
Europe thrives utmost because of the German-Celtic rise. They banned slavery and created a free Europe. Sure, the lack of slavery caused less massive architectural pieces but every social structure was better than ever in the dark ages. Eastern Rome just vibed as well. The dark ages are called the dark ages because of the lack of sources. Apparently Christians burned all the German-Celtic libraries. Europe was and still is beautifully pagan.
Pagan: Every girl is a god. Each love is a soul. The loveliest love rules all, as the only motive is love. Yin-yang etc etc.
They were also communist. Every community is a communism. Each region of Rome/Europe THRIVES because of the ever increasing regionalism.
Rome simply evolved into being greater European civilization rather than a subjugator. The events of the dark ages are evolution and progress that created the necessary fundamental collectivism that made Europe the perfection it is today.
Pure civilization gains. Consistently throughout.
Tho I do consider the monotheist fag-cults like Christianity and Islam to be a net loss. That is pretty much the worst we endured. The rest was all good.
AVE VIVE SIEG