I see: you can envision long-range gunfights, just not ones against more than one attacker. That's cool by me.Why should we stop there? What makes you think a gunfight will be limited to a distance of 25-30 yards? Is there some unwritten law...
And, gosh knows, if we are anticipating a longer range gunfight, we still have to carry a J-frame (not a larger handgun) because the only alternative you mention are "hi-cap long guns." I guess you are no stranger to the "ridiculous comparisons" you accuse me of, are you?
Actually, guns by themselves are not capable of anything. It's the gun-shooter combination.
Which will most shooters be "capable" of: making your (arbitrarily chosen and improbable) 25-30 yard SD with a standard J-frame? Or making it with a laser-equipped J-frame? Or making it with a larger "standard" sized pistol?
If you feel all three scenarios are equal, well, I disagree.
And if you are so concerned about long distances, doesn't it make sense to go to a gun that will also make shots handily at (what?) 50 yards, or 100, or...
(You have said that my 300 yard distance is "ridiculous", but you haven't said what your non-ridiculous maximum SD handgun practice range should be. Waiting.)