Hello, Love the Unreal Engine and think that it is amazing!
I think a good improvement would to make adding videos like adding audio files.
To add a audio file int eh game I just drag and drop the WAV file in the content browser.
To add a video I have to create 4 different items for each video. To me if would seem that you could make it work the same as the audio, just drag the video into the content browser and then from there you can drag it to a plain or static mesh.