U2 opened James Dolan's Sphere in Las Vegas this past weekend.

Vegas Sphere cost $2.3 billion, more than $1 billion over budget.

Dolan wants to build more Spheres around the world, with East London next.

In an office park near Hollywood Burbank Airport is a quarter-scale Sphere, housing development of video content for Sphere ventures.

"The content, no matter where the Sphere is, will be created here in Burbank," asserted Dolan.

Baby Sphere should moonlight as a live music venue for smaller acts. Test video content while recouping some of that $1 billion.

In fact, considering the money pit that Vegas Sphere became, Dolan should follow it up with a chain of Baby Spheres instead.

70mm IMAX for live music.