Well, for what it is worth, figured out how to use ArrayGem to place protrusions normal to a sphere, which would be
scriptable.
ArrayGem works with line segments drawn from the surface, to the center of the sphere! (Not from the center, to the surface.)
It also works on eggs, and should work on other solids, and other surfaces.
It is necessary that the Gem distance is larger than the lengh of the line segment...+/-.
For the egg, started with a circle, and scaled it up to surround the egg, then trimmed the lines.

This might be good for placing a lot of objects on a surface...
(For a few, or several dozen, the orient command is superb.)

Attached is an egg which has predator protection...