I'd prefer a slight fade/pulse effect to show that it's being contested or captured. Spinning is a bit too distracting.
Pulsing is MUCH more visually distracting than a faint spin from a graphics perspective. A spin is constant, and your eye adapts to the motion. A pulse gets your attention each time it pulses, and is much harder to accustom yourself to. Thus, pulses should be
very carefully used in UI: too subtle and you'll barely notice, but to obvious and they draw away ALL the attention.
I'd really recommend avoiding this for point capture indication, which isn't something you have to be
constantly aware of. It should just be easy to check.
That being said, the newer icon set in my latest posts has no spinning involved. It has an outer circle that fills with a percentage to show point capture, and that's it.
Edit: Ohhhh the segments on either side show the number of ships capturing?
Nope. The icon state shows the number of ships capturing. The segments show the number of ships of each team currently on the point.
The number in the circle is still very unclear what it means. Someone should be able to start playing this game without having to ask or experiment as to what that number (or icon) means in the capture point icon.
The more recent version has no numbers: Skulls represent enemy control, Stars represent allied control, and a Hand represents a contested state.