With all of the thematic material crammed into this I suppose the double 'unches' are to be expected, but I can't quite make everything fit 'uniformly'. I'm either missing something (I'm no expert on the theme) or not everything in there is thematic.
My 'anomalies' offer thematic possibilities (in reverse or vertically) and given a little leeway for letter placement I could fill the space - but 'uniformly entered' rules out that approach.
The clues are tricky in places and I like the general idea, but...