The logo could be resized to make more room for a preference button however, I don't believe that the size of the logo has anything to do with getting solo/mute buttons working properly or that any of this has to do with keeping/removing the Play button (which actually has a very definitive purpose).
The Play button has a purpose but it's the Play Demo Button that serves no purpose, you don't go into the Style picker, pick a style, close the window, Play Demo, go back into the style picker, pick the next style, close the window, Play Demo.......
But if you want to leave it there just put the Sync to Host button on the head of the sax player in the Big Logo, so when you double click his head it will turn green and when you double click the head of the double bass player it will turn yellow and solo sync/play the current selected slightly darker track.
I have been through this a thousand times over the year
I must be pretty darn stupid to keep at this

I will have to try a cold turkey with it I think.
I made a new Reaper Skin with the single mute solo button, just got to upload it and see how popular it is