Wrong

Forget a bubbling jacuzzi. The Event Horizon should appear to be a coal black, infinitisemally thin, bumpy bubble.

Suppose a binary star system enters the horizon. Stars orbiting one another are effectively a clock. Clocks stop at the EH. So as soon as both stars are inside the EH, there would be slight bumps where they entered.

The "shapes" of the bumps would be the two-dimension projection of the masses of each star, slightly smeard due to the slowed movement of the stars as they crossed the EH.

The bumps would would exist because gravity shapes time-space and the shaping progresses at the speed of light. Added gravity from the stars would "extend" the EH slightly further near the each star, and this "extension" [bump] would spread at the speed of light. Other masses would create other bumps.

I do not understand the mechanism and patterns of transfer of charge, linear momentum, and angular momentum through the region between the EH and the singularity. The central singularity, and maybe only the singularity, could create a perfectly spherical, charged, spinning, moving black hole.