It all seems so perfect, naturally, in the artist’s rendering of the Oakland Athletics’ proposed new stadium. Fans of all kinds flock to the ballpark by Howard Terminal — young, old, black, white, one in a wheelchair, one walking a dog. The distinctive silver cargo loaders on the bay loom to the left, while a military flyover roars overhead. The marquee declares this the 2023 World Series.

That would mark 33 years since the Athletics’ last appearance in the World Series, a stretch that would nearly rival the franchise’s chasm between pennants from 1931 to 1972. Those fruitless decades were eventful, at least, as the franchise migrated from Philadelphia to Kansas City to the Oakland-Alameda County Coliseum, where it has remained.

Twenty-two teams have changed ballparks in the last 30 seasons, creating more revenue and a better fan experience than the A’s enjoy in the creaky, charmless facility they share — for now — with the Raiders of the N.F.L.

The A’s have spent more than a decade trying to escape — prisoners at Alcatraz had better luck — but this time, they believe they will finally succeed. If they do, they will play in baseball’s first stadium to fit within a grassy, tree-lined public park on the perimeter above it.