Allow instructors to show results to students even if not all students in the class have gotten their answers in yet.
Not all instructors grade, and it takes a long time to wait for all students in very large classes to poll in. Sometimes having results from 75% of the students is enough to discuss and move on. If the poll can keep running to collect answers, then all students can be counted for participation even if they have already seen results. Poll Everywhere does this and it allows me to move through class much faster in some instances.
Michael Baechtold commented
If you set the option automatic pacing, then learningcatalytics will automatically start a countdown (typically between 30s and 2min) to stop delivery of the questions. I find this a good solution instead of waiting for all students to answer. Also if you discuss the solutions while some students can still answer that would skew the statistics.