I agree. Visualization of goal-data is an important piece that isn't well covered at this point.
For users that want a simple, "get me up and running" solution, the Benome button approach to data collection could be very satisfying (in a Happy Button[0] way).
I just see the possibility for wider adoption and contributions if it were more modularized to separate the data input and the visualization.
There is definitely value in Benome's visualization. One of my personal goals is to use Taskwarrior. Because I'm trying to optimize my workflow –not add more overhead– I'm not going to add the Benome data input to my workchain just for the visualization. However, if I could simply connect my Taskwarrior data to Benome, I would absolutely use it (and it would probably reinforce my self-reflection and subsequent data input).