ORIGINAL: Canoerebel
He who controls Midway controls thousands of square miles of ocean.
If Japan controls Midway, Japanese patrols and subs and picket ships can spread out from there, making it nearly impossible for the Allies to sneak up on places like Wake, Marcus and Iwo. If the Allies control it, though, the Allies have a decent chance of getting at least as far as Midway and maybe much farther before being detected (especially if the Allied player has succeeded in deception activity elsewhere). This could mean a difference in fifteen days or so warning time for the IJA player. Few Allied players are going to even try such a move if they don't control Midway.
Meh.
The problem with Midway is that it's so far North. Allied invasions of Wake, Marcus and Iwo can be effected with minimal delay by doglegging down slightly to the South before resuming the WNW trajectory. There's quite a search gap in the Pacific ocean on the line between Johnston atoll and Wake. Midway ownership shouldn't impact this.
When combined with the fact that all naval search beyond 12 hexes is largely fruitless (further minimizing Midway's value proposition), it's a non-sequitor IMO. For the IJ to NOT take Midway is not irresponsible, IMO. You'd have to count me off of this jury, dude-san.
In this game, Midway is even more important. The Allies have built up the Aleutians in a major way. A move to the west is certainly possible, from Brad's point of view. Midway is an important supporting base on the left flank of that theater. If the Allies hold it, it reduces the seciton of the Pacific that Japanese ships (especially carriers) can traverse without detection, making it more difficult for Japan to move from, say, Kwajalein to the Kuriles.
But your Aleutians and Central Pacific ops are not interconnected, right? They are two independent thrusts that are mutually exclusive, as far as Brad knows. I doubt this is a major issue for him.
The main benefit to Midway as the Japs (as I see it) is as an advanced submarine base. So close to your West Coast CONUS-Hawaii transportation network that short-ranged RO boats and otherwise lesser capable submarines can be utilized here to interdict your shipping.
Sure, if you've got it, stick some search planes on it, but it's not going to kill you one way or the other.