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