You can level in the crafting station or WvW to level 80 and never see the world. Than you think it would perhaps be fun to play your personal story. And than you relize the you have to run and run and run and run.
If you allow people to teleport to their personal story marker, you would support diffrent playstyles which do not have much interest in exploration. Make it expensive so people who do explore the world have a bonus above those who don’t.
Just a short idea I had.
Desolation – Mistress of significance level