How about a TL where the Beatles never came into existence? I've always thought a TL with this premise could be very interesting but only if done by a Beatles fan.Not sure yet, in the meantime likely a long break but there will be some tweaks and clean up done to this TL in the meantime so they'll be some subtle changes here and there.
A POV could be the Beatles or their parents meet untimely deaths during WWII. I would butterfly the Stones and most of the bands from the first wave of the British Invasion.
Just a crazy idea that I'll probably never write but anyone else is free to use it as long as they send me a link to it if ever posted.