Perhaps I look at ASL in a bit too binary a way, so I'll ask: What is an example of a sleaze that "borders on cheating?"
I've written about my views upstream. But concisely put, I assert that ASL models WW2, making many explicit abstractions, and it weaves together a paradigm for the game. To me, a questionable play is one that employs a legal move but which circumvents the clear intent of that paradigm.
EX:
--Abandoning an AFV at the last moment to gain building control.
--Russians using prisoners to deploy squads all over the place.
--Charging the enemy with trucks.
--Intentionally breaking a unit so that it can rout forward in the hopes of rallying and being good order in a hex it could never have reached otherwise.
These moves are all legal, though some of them might hurt your cause more than they help it, and in my view none of them are realistic portrayals of combat in WW2. Players can dispute what belongs on this list and what doesn't, and can dispute whether or not it's fair to play such moves, and some players may even assert there's only legal moves and illegal moves, nothing in between.
So there's a wide spectrum of thought on this issue.