The phrase "a compelling element of" is correct and usable in written English.
It can be used when discussing an important or persuasive aspect of a topic, argument, or piece of work.
Example: "The research presented a compelling element of evidence that supported the hypothesis."
Alternatives: "a persuasive aspect of" or "a significant factor in".
Yet there was in Perez's story a compelling element of truth — the revelation of a culture within the L.A.P.D. that, at the least, countenanced a strain of rough justice in the street.
Interestingly, paxillin localization to FA was described as a compelling element of cell polarization through spatial control of Rac activity, a potent regulator of actin branching [58].
The most compelling element of a Welch and Rawlings performance is their deep and, so far as I know, unexampled engagement with each other.
The fact that one of the deadliest bacterial pathogens known to mankind, Mycobacterium tuberculosis (Mtb), makes use of the pupylation pathway to help overcome the immune defense of its host, adds the compelling element of biomedical relevance to an exciting biological system.
As he was on his previous hits "Low" and "Elevator," he's the third or fourth most compelling element of the song, noticeable mostly as a rhythmic component.
You can only downvote a comment if you have enough "karma" on the site, which is another compelling element of Hacker News.
Surprisingly, in this performance the most compelling element of this raw, wailing, coloristic piece was its organic sweep.
Still, how well they've functioned as a unit, with no viable signs of division between their old and young factions, remains the most compelling element of this team.
And so the most compelling element of "Lindbergh Flies Again" comes from the interviews with those who still remember the original flight, men and women who knew Lindbergh, flew with him, helped build his plane.
This contradiction is perhaps the most compelling element of BENEATH THE MASK OF HOLINESS.
This might have been the single most dramatically odd and compelling element of The Who's stage show.
