Straight to the points:
1) Do not set the Poster property and no image poster will be generated - video demo
2) Since the PlayList does not offer a built-in Width and Height properties, my advice is to load it inside the MediaPlayer by setting the Position property to "VerticalInside", i.e.
<PlaylistSettings Position="VerticalInside" ...
3) You can hide the show/hide playlist button with this CSS class:
4) I am afraid that the control does not offer the requested statistics capabilities. If you'd like to see such functionality enabled in the control, please file a feature request in the feedback portal: https://feedback.telerik.com/Project/108
. Thank you!