There's an awful lot to like about this puzzle, but there are also a few flaws that come close to being fatal. Let's take it one element at a time.
First of all, the theme. I figured out what was going on when I got to 44D: Tire hazard (POT[HOLE]). I had already filled in 36D: Tax dodger's discovery (LOOP[HOLE] - and I'm not sure that clue is exactly correct - after all, loopholes are legal), but initially assumed that it was some weird shorthand. I like this kind of theme in general - we've seen variations on it in the past.
But it definitely got better when I got to the East side of the central hole and realized that gravity had turned the answers backwards. That's a nice piece of crosswordery, if I can coin a word. Obviously, the answers in the South section go from bottom to top as well. The twelve examples of words or phrases ending in [HOLE] were all acceptable examples.
So I liked the theme quite a bit. The fill worked for the most part. In fact, the puzzle was a bit of rapid romp for me, up until I hit the SW corner, which seemed like it was at a level of difficulty higher than the rest. Of course, if I knew that LEANNRIMES had written that song, it would have been easier. ORAN was unusually clued with reference to Casablanca. ENID was a name from Arthurian legend I was not familiar with.
Otherwise, there's good stuff elsewhere in the grid. 13D: Change places (COINPURSES) is fun. 28A: Remove a piece from? (UNARM) is clever, although I'd prefer "disarm". 93A: 50 or more people? (AARP) is also nice, except for the fact that you start getting mail from an association designed for retired people at the age of 50.
22D: Greens ___ (FEE) got a "huh?" from me: apparently it's the fee to golf. OHMAGE is also a head scratcher. I understand it's referring to the unit of electrical resistance. I'm pretty sure nobody outside of electrical engineers use it.
A mixed bag. I wanted to really like it, but the SE made it untenable in the end.