THEME:   Letter E made from grid blocks, but no other letter E's used in the grid   
GOOD ONES:     What the grid letter is, across and down   MISSING      
BTW:   I would probably not have noticed there were no E's in any of the fill except for the fact that I usually notice the use of J, Z, X, Q and found they were.  Must have been more fun to make than it was to solve.      
Tract   PLOT   [a tract is comprised of many plots in normal parlance, but I suppose it's possible to use them interchangeably]      
RATING:    
 
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun