there's no need for it, the 2 leves themselves offer a decent amount of xp and the aspect of traveling back and forth can easily limited by the proper use of setting Home points and "favored" destinations.

If you are desperate to save anime then you can do the following
-Set HP at Inn and leve place as the other HP (negative is waiting 15mins to return)
-Set HP at Inn and if it's main node set it as a favored location (2 anima a trip)
-If it's a secondary node then set that as a homepoint and teleport back to town (2 anima a trip)

Pick up two leves at a time so you'll be doing leves at an even ratio in which you use up anima. And if you are desperate for anima then turn in items at the Hamlets and boost up your anima a bit.

Honestly there is no need to change the DoL leves since as it stands now DoL is nothing more than gather x item, or gather from x locations. Perhaps when 2.0 kicks in and the concept of DoL is enhanced more leves can be added to expand on the ideas that area added to them but as for now two leves are enough and you should just make use of sweat of brow and gather in the open world.

You're better off lving a gathering class under the concept of earning gil rather then making the most xp at a time. It'll go by a lot faster that way.