Perhaps traction was used poorly in my example. I meant that form is needed, execution has to be solid, if not the final piece will not reach its potential. Think of a movie that you thought it was bad, but that was based on a great idea. For me it would be "The Purge", awesome concept, poor execution. Those movies sadden me more than the ones that are simply bad through and through.
I would like to add, besides plot and style (what in the previous comment I dubbed execution), there is also structure, pacing, and voice.
Thanks for answering my comment RMartian.