Now, instead of being able to take a few people with you, you seem to be only able to transport yourself.
But what if you're physically capable of picking someone up as part of your carrying capacity, and still be unencumbered? Is there a real difference? I can carry a corpse, but not a living creature? What about an unconscious one?
Can he transport people in a dimensional pocket?
This just seems like a change that many people who made use of it previously are going to just work around it, or likely ignore.
Of course, I know we'll always be welcome to house-rule it out, but I never really thought this was a big issue before.
Taking someone with lets you give free movement to someone else, taxi-ing them to ensure they can take a melee full attack when they act next. While this sadly still works with the arcane dimension door, at least if the caster DDTaxis the combatants to the front line, he has to join them there. The monk wanted to get to the fight anyhow so being a taxi is hardly a cost.