It would be awesome if a symbol for the triangle (the instrument) could be added to the Bravura font; it could look somewhat like the attached:
Thanks for your consideration.
What’s wrong with the one shown here? https://w3c.github.io/smufl/gitbook/tables/metallic-struck-percussion-pictograms.html
It’s broken at the left hand corner. Somebody must have dropped it and trodden on it, or something like that. 
Despite the broken corner, it seems to sound much more resonant than Stephan’s 
What do you expect? They keep hitting their instruments with sticks!
Oops, sorry, I didn’t see that anywhere in the glyph panel of the playing technique editor. 
All triangles have broken corners. That’s how they ring-a-ding-ding.
You don’t say! Are you sure this is not an excuse for manufacturing damage? Lightly hammered world-class bronze…
At the start of the video, notice how he is covering up the broken corner with his hand … 
No, the gap is just a plot so that the triangle will slip off the holder loop and get lost so you’ll have to buy another one.