Why it couldn't be. This game has been driven go to this location, pick these items, gathere x amount of items, kill x amount of mobs, escort the NPC and keep him alive, purchase these items for me.
It will always run over and over the same formula. If Suramar has the leylines to let you port around, the sea and ocean has its own method. Choose to travel across and above the waves, swim dive or drive underwater use a diving suit, use a water jet pack, use a sea creature mount, use underwater current and tunnel ways, get trapped in a water bubble and move across the vastness of the sea or even ride a alliance or horde submarine! Blizz and WoW implement, you either love or hate the experience. No matter how hard you complain, you get to do it over and over again.
Just as an off topic if you run the deeprun tram there is a section where you can see the ocean above a high pressure glass. In the future where resources are used and implemented they can implement a tunneled underwater tramway as the story progress. What are Gnomes and Goblin races for or even use the Draenei technology and apply it to water transortation?