[weightpillsnow]

As can be seen from these sections {9, 15, 21, 27, & 33}, Right Mindfulness is, in fact, all steps from Right View through Right Livelihood, and not, as you say, merely maintaining Right View alone.

The sutta states:

"Of those, right view is the forerunner. And how is right view the forerunner? In one of right view, right resolve comes into being. In one of right resolve, right speech comes into being. In one of right speech, right action... In one of right action, right livelihood... In one of right livelihood, right effort... In one of right effort, right mindfulness... In one of right mindfulness, right concentration... In one of right concentration, right knowledge... In one of right knowledge, right release comes into being. Thus the learner is endowed with eight factors, and the arahant with ten. The arising of all path factors depends on right view.

Also, understanding theory is based on actual practise.