I use the term "light spikes" and "dark spikes" as a filler name to introduce a new concept to the spike abilities. Another term might be "spike II's". The basic concept is that either the (2) spike function similar to a regular spike, that is to say based on mob damage to a redmage, however rather than damage a redmage would gain a bonus to their Enspell II's.
For example, "lights spikes" could build in "energy" slowly raising Enspell II's damage by factors of +1 to a max bonus. As for "dark spikes" perhaps the bonuses would be to a redmages MaB for regular nukes.
Alternately, create a new tier II for all spikes(ice, fire, wind, water, earth, thunder, blizzard, light, and dark) that raises the Enspell II damages of corresponding element. That is, "fire spikes II" would raise the damage output of "enfire II". As a redmage is damaged, not only would mobs suffer damage from spikes, but feed power to a redmages enspells.
This could possibly rectify the whole "fail" arguments of Enspell II's while introducing a self-used tier II spike spell series.