I don't think this is such a good idea.

First, not everyone is willing to go on an adventure and travel. People want to get to places quick and easy because running around in this game is terrible... it takes too long. Some people aren't willing to waste their time running from Limsa to Gridania because like like travelling

Second, when Airships and Chocobos do become available, the current regenaration of anima and cap is adequate because people will be using these modes of transportation more once their anima count goes down to 0. So with this case, since there will be airships and chocobo, more people will use anima more quickly (because they know there are other viable means of transportation) which means more people will be seen travelling on chocobos or airships. So in my perspective, it's kinda a win/win.