Being able to shuffle the Now Playing list would be helpful though for the case where you add tracks to the list from different selections and then want to shuffle that up.

Suppose I start in the Artist browser and add all tracks from 2 artists to Now Playing, then I navigate to the Album list and add an album from there using Play Last. Now I want to shuffle the resulting list. Can't do it. Would be nice to have this added.

You can't Randomize the Now Playing list itself, however you can add files randomized to the Now Playing with the Shuffle Play button on top of most track lists.

In BubbleUPnP there in the currently playing playlist from the menu "shuffle tracks". As a result, the songs on the list are pre-mixed once. Not like the one order, you can mix them again.

Why is this function not in MediaMonkey for Androids "Now Playing" Menu?