Carrying out a good phrasing plan is essential to musical hymn playing, but there is more:
Repeated-Note Treatment
Remember that a phrase is a musical thought; it has a beginning, a middle, and an end. A phrase is cohesive--it flows from left to right. Anything that tends to disrupt that flow, except for intentional phrase breaks, detracts from musical hymn playing.
A choppy treatment of repeated notes can disrupt the flow of the phrase. Try one or more of the following ideas to soften the impact of repeated notes:
Example 1: Choppy repeated-note treatment
Example 2: Flowing repeated-note treatment