Currently, Inspiration appears to be incredibly underpowered. Using it on a late-game conclave with maximized education bonuses and no unrest, this grants an insignificant research bonus (about 5%). That just seems bizarre, considering this game attempts to encourage city specialization. Currently, however, I might as well use Inspiration on my Fortresses. +1 research per Essence, should this be deemed to be then too powerful, could at least be made to be costlier to cast.