Not a staple, no. In that video, I was using them as a leg press type movement for widowmakers on the DoggCrapp program, as they placed little stress on the lower back and hammered the quads when elevated. When I train for strength, trap bar lifts don't make it into my program often. They're usually only good for 2 things
1: Loading up with a TON of weight for maximal effort work just to train myself to really push with as much effort as possible
2: Standing on a very elevated platform so I can learn how to keep a nuetral spine during the deadlift
They're great for high rep conditioning though. Here is another video I made where I keep reducing the ROM in a set by removing the mats I stand on
It's very long and boring, I apologize. I tested out the theory while I was sick, so recovery sucked. Skip through the video to get the point.