All SAOs pulse by default, no questions asked.

However, some SAOs are not well fitted to this animation:

• Mage's Heating Up has no reason to pulse, only Hot Streak should pulse
• Shaman's Maelstrom Weapon has no reason to pulse with stacks 1-4, only the 5th stack should pulse

Pulsing is a strong invitation to take action "now", so it should pulse only when relevant.

Technically speaking, it could be as simple as adding a new pulse parameter to SAO.ActivateOverlay.

Be careful when the same spell ID is shared between pulsing and non-pulsing SAOs:

• when a spell ID has a non-pulsing SAO then a pulsing SAO, what happens?
• same question for the other way around (pulsing then non-pulsing)

As in #7 there is a possibility to use a fake "internal" spell ID. But this time it's a bit better:

• the weird show/hide isn’t a problem here because there’s already a signification change in animation
• in fact, this weird animation may even be desirable because it accentuates the "do something now"
• (the latter point works especially well when switching from non-pulsing to pulsing)
• (it could be a problem when switching from pulsing to non-pulsing, except nothing does that now)

PS. this may be a slight change to the original Spell Activation Overlay which always pulsed.
In other words, this issue is probable in the #SomeChanges category.

Fixed in #34