They had a lot of weird stuff in Enterprise. I would love if they did a show in that era that was actually about that era instead of time travel shenanigans. It would be fun to learn about how the alliances and rivalries built up, the successes and blunders and cultural clashes. From what I recall, season 4 was when they finally started looking at that stuff and by then it was too late.
Yeah. If Enterprise started with the Romulans as the villains, they could have easily kept the better episodes of the series and ramp up to the eventual Earth-Romulus War.
They wouldn’t need any time travel at all except for the Borg.