The recent version 2.2.0 patch for Diablo III did not address how Rift Trials operate, though this system that requires continually requalifying for trials is a system that many players of the action/RPG sequel wanted changed. A forum post by Blizzard community manager Tyvalir asks for patience, explaining that Blizzard is still looking at ways to change this:

In fact, Wyatt mentioned during our last Tavern Talk that we've considered allowing you to earn multiple Trial keys at once (as one possible solution). While we did not make changes to Trials in Patch 2.2.0, the bottom line is that we recognize they can be improved, and we're weighing different ideas for fixing them. In the meantime, we appreciate everyone's patience as we develop a solid solution, and we'll be sure to share any updates as soon as we have them.