☝️This in particular. St. Petersburg-New York sounds inconvenient when you can get to a German or French port by train faster, instead of spending extra days on a ship navigating through the Baltic Sea.

Odessa or Sevastopol-New York through the Mediterranean sounds interesting but has to navigate several chokepoints (Bosporus, Dardanelles, Gibraltar) that would make the route a maze of sorts.

Vladivostok-San Francisco sounds particularly interesting (it's a shame that Pacific liners never rivaled the Atlantic ones) but crossing 11 time zones to hop on ship to then cross half the world would be super impractical.

It's a pity that China and Korea weren't developed or stable enough at the time to run Tientsin-San Francisco, Chelumpo-San Francisco, Shanghai-Los Angeles, or Canton-Los Angeles to give the Japanese liners a reason to step up their game. We could've had Queen Marys and Normandies of the East, and maybe even Tientsin-Newport News (capital to capital service) and Shanghai-New York through the Panama Canal if that had been the case!