Ok so I must say that the portals in Stormwind and Ogrimmar are nice to get the new content. The thing that would be nice would be if it were a little more consistent. What I refer to is the bi-directional portal in Twilight Highlands and Deepholm. The other zones need a portal back to Stormwind. Ya I know we can hearth but I like things that are consistent, especially for Uldum. If not that then at least put a portal from Stormwind to Dalaran so we can then take the portal to the Caverns of Time.
All in all travel in the new content is much better than it has been in previous levels of content. The thing is that travel between sections of content by level brackets for expansions leaves a bit to be desired. Travel from Outlands to Northrend sucks as it does not exist. Travel from 1-60 and Northrend is by boat only, so it sucks as well.
So all in all travel is good for current content and well is lacking for previous tiers of content, maybe when the redo Outlands and Northrend in future expansions we may see something interesting.