1- Immersion is subjective.

2- Like someone said in another thread, full airship travel breaks my immersion more because I am damn sure that I'm not staying there to watch it for 10 minutes. I'll either go make a sandwich or browse the internets.

3- If you want immersion you shouldn't look for it in online games, all your efforts to ignore the hundreds of game systems, the GUI, etc. will go to hell when the Evil Warlock of Doom you are traveling with says "lol hold on, my cat just shat on my keyboard".