I like mini-themes in themelesses, as long as 1.) they're amusing or surprising, and 2.) they don't degrade the puzzle by introducing excess inflexibility.
Today's MAY / THE 4TH / BE WITH / YOU was both amusing and surprising — unusual to have a digit in a themeless, and very unusual to have four separate answers connect.

This Star Wars dork says that the force is with Mark!
Splitting up the mini-theme as MAY THE 4TH / BE WITH YOU might have been better, though. It'd be one thing if each of the four pieces could truly stand on their own. But BE WITH felt partialish (and THE 4TH to a lesser extent). So why not go whole hog and run MAY THE 4TH / BE WITH YOU as a cross-referenced pair of marquee answers?
I also wondered if criterion 2.) had been compromised. You might think splitting into four pieces would make things easier, but it's often not the case since that forces (ha) multiple black square placements right off the bat. While I did like PROCEDURE MANUAL and BALANCED BUDGETS, they're more workmanlike than colorful.
In the case of PROCEDURE MANUAL, literally workmanlike!
A bit of ABEAM ATEST EEN SRAS YRS too. Overall, I think the puzzle could have had more of a remastered Episode VI effect instead of an original Episode IV one (read: bright and shiny vs. you can almost see the strings holding the ships) if MAY THE 4TH / BE WITH YOU had seeded two standard 9x3 stacks.
A ton of great clues today. The telltale question mark did nothing to lift the fog from [Fashion lines?]. Hems? Seams? D'oh! That's fashion, used as a verb. Brilliant AD LIB clue.
[Hard to move] also baffled me, especially with no question mark. One sense of [Hard to move] is heavy, awkward, gigantic. Another is STOIC.
TSA AGENT is a great entry on its own. With a tip of the hat to removing one's hat for a TSA AGENT, it becomes even greater.
Loved the Star Wars nod. I bet if Mark had gone with a 9 / 9 split of the mini-theme, it'd have blown up the Death Star, instead of just missing that exhaust port.