As I've said in SL many times before, " If you don't ask, you don't get".
Nobody seems to be asking. So I have.
However, I fully expect LL to say no to my ideas, but at least I will have actually tried to do something about it. And maybe my effort may trigger an idea of their own.
As for the straight lines and right angles, I'm not a fan of quick diagonal 3 sim corner hopping, its terrible for smooth sim crossings. I also wanted to recreate the look and feel of a long distance ocean voyage for large ships, which are usually far out at sea. Doing long distance inter-continental voyages tightly pressed up against a short, shallow coastline or river in a Queen Mary sized ocean liner, freighter, warship or oil tanker may prove to be difficult or impossible. As many people will testify, there is very little access to large bodies of water in SL for those who have large ships, while smaller vessels such as sail and motor boats are relatively spoilt for choices.
Aircraft too, especially airliners, perform better in long straight uncluttered sim corridors away from skyboxes, parcel security orbs and the general lagginess of populated land. Anyone who has flown up the new long straight remote Jeogoet sea channel recently will agree with this.