ENT + TAS = ???
Take the darkness of Enterprise and add it to the primary colors of Star Trek: The Animated Series and you may get an on-line animated Trek series.
The setting is the year 2528 and the Federation is a different place after suffering through a devastating war with the Romulans 60 years earlier. The war was sparked off after a surprise attack of dozens of ‘Omega particle’ detonations throughout the Federation creating vast areas which become impassible to warp travel and essentially cut off almost half the Federation from the rest. During the war the Klingon homeworld was occupied by the Romulans, all of Andoria was destroyed and the Vulcans, who were negotiating reunification with the Romulans, pulled out of the Federation.
Later on the article mentions that the Romulans weren’t responsible for the Omega particle attack. I’m guessing the Borg dunnit.