Closing your eyes just grants me combat advantage.
Actually, when you post something silly, yes, I do tend to ignore it because I know about your hyperbole snowball effect.
With regard to Hit the Dirt and Shield.
Hit the Dirt:
1) Is 22nd level.
2) It affects all defenses.
3) It only affects area and close attacks.
4) It only works if the PC can get far enough away. Nothing in the rules indicates that the PC knows what the area of an enemy effect actually is. According to the rules, the DM can run it either way (the player knowing the area or the player not knowing the area) since the rules are silent on this issue.
Shield:
1) Is 2nd level.
2) It affects AC and Reflex.
3) It affects any type of attack (area, range, close, melee).
4) It only works if the attack is within 4.
#2 is advantage HtD, #3 is advantage Shield. So, the only thing balance-wise to offset #1 is #4. One could run HtD where the player knows the area of the attack and run Shield where the player does not know the die total and it would be totally balanced since HtD is 20 levels higher than Shield.
Hence, your conclusion is faulty, regardless of your over the top hyperbole of insanity (and your hyperbole is one of the reasons I sometimes ignore your posts). This example illustrates nothing with regard to whether the DM should state out loud attack totals. In other words, your example here is a red herring to the actual rules discussion about Shield.
Let's take a rules quote instead:
You resolve an attack by comparing the total of your attack roll (1d20 + base attack bonus + attack modifiers) to the appropriate defense score. If your roll is higher than or equal to the defense score, you hit. Otherwise, you miss.
This quote supports my POV. It does not support the "pro-DM states attack roll out loud" POV. Why? Because "you" refers to the DM when the DM is having an NPC attack, hence, the DM compares the total, not the player (with a literal reading of this rule).
The problem with such a literal reading is that the player might then be entitled to know the defenses of any opponent he attacks. He does the attack comparison, not the DM.
Quid Pro Quo.
However, the solution to this is that one can take this interpretation literally for the DM attacking and not literally for the players attacking since the DM is not forced to run the game in a specific way (unless the rules say so). YMMV.