Re: Only military logic
Interesting about the cannon narrow-beaming. Wikipedia's entry stated that the gun originally had 2 selectable rates of fire - 2k/rpm or 4k/rpm but that was dropped to high rpm only. Wonder if that could help with the problem.
AC-130 is an evolution of an even older beast, the AC-47 Puff the Magic Dragon, IIRC.
In both cases, I wonder how well the planes would fare on a hi-intensity battlefield against well-armed opponents with SAMs and AA guns? The A10 could benefit from flying low, but wouldn't an AC-130 be one big sitting duck? Also, I would guess that an A10 could be scrambled somewhere faster than an AC-130.
Not to criticize your post, it raises very valid points.
And in a way, retiring the A10, which is due to budget pressure, is a positive sign: the US keeps way too many weapon systems alive due to congressional pork, manufacturer lobbying and the like. Unfortunately, there is one system crying out for a cull which is verrrry safe.