Yes it would be. It has been asked for and we have been promised it will come but when we do not know when.
Dragging scenes into another group is the only way you can do it at the moment. Once you have the scenes in the group you want you just rename the scene,
So if you want scenes for pieces of music 50, 60, 66, 77 in the first group just drag them there rename the scene (double click the scene name), move scenes that you do not want in there out to another group.
Repeat until all in order.
Never empty a group otherwise it deletes the group.
You could use the virtual screen that allows you to move your buttons around as you like and colour them as you like. It's a bit buggy when on a second display in trying to set it all up. best to set it all up on primary screen then when done take it out of "Full Screen" and move to 2nd screen and then put back into "Full Screen".
This post explains it's use a bit more.
http://www.daslight.com/support/viewtopic.php?t=207