I guess the mass-transit way between islands was inevitable after the Subway went into operation. Kind of makes sense to use a ferry between the "mainland" and some islands like those that Shimlah Mirch and Llmenske Caverns are on.
i like the hole to ix, and ladder up from it. wouldn't want a ferry there, although maybe if the ferry went to "ix hole island" as a starting point, that'd be cool.
shimla mirch has a subway connection to groddle that makes a ferry connection seem odd. i suppose the subway could go through an underwater tunnel to the mirch, but i'd much rather have a transitional street where groddle heights converts into swamp land. the primary colour of the two realms is brown, so a transition might not be too odd.
still .. a ferry to uralia would be *awesome*. the caverns would be made less accessible due to the ferry wait times, so going there to mine would be much more of an event and a sacrifice. not only would it be visually awesome to travel by ferry, but it would add an exotic quality to the mines of uralia.
Well, can we have transitional streets? Its unsettling to be just walking through Groddle and to spontaneously be in Uralia. There should be more transition between the realms.