I think “house rules” as listed on many of these chat boards re: all the Axis and Allies games are mostly stupid. You can’t expect total realism from a board game that uses dice to resolve everything. And you also lose some of the playability when you burden the game with too many rules. That was the problem with the old Avalon Hill games, the old tile games. Every time I made a move I had to consult the rule book to see what the heck I was doing.
On the other hand, I have used house rules from time to time… just to tweak things a bit. One of my “house rules” actually became a rule change. (but not because of me).
In Axis and Allies Europe, I changed the destroyer shore bombardment to 2 or less, down from 3 or less. This rule was actually written into the Axis and Allies Pacific rulebook and I believe the revised Europe rules. Beforehand, my opponent never invaded Normandy. He just used destroyers to blast my German infantry divisions at 3 or less.
I also contemplated allowing defending infantry to hit at 3 or less in amphibious assaults, which was also made an optional rule in Axis and Allies revised.
I think a hide rule in Axis and Allies Miniatures would bog down the game. You actually have some secrecy already, because you don’t know what army your opponent is going to have as you select your own units.
Now, another point. World War II would have been a lot less bloody had the warring powers used dice to decide battles instead of real bullets. For instance, Rommel and Montgomery would meet at the center of the battlefield and throw dice on a small table… never mind…