Human mind and custom setup is always more interesting than random. M2 has no good base for freeplay mode and custom editor seems far to be ready to release why want all even if this is obviously impossible? The custom editor that was a cruel lack in M1 would be great to have in M2, but well I don't hope it as the game get too many bad words so the guys with the money think it worth put more money in it.
For the first play; yes. But once you know the map, you know the map. You can already see that happening in MFKS2. In a truly random map (not layout, but lair layout) such would be unknown, so each time there is the "exploration" a fixed custom map misses, and the effect of possible surprise (well, not if you put in all options,

).
So yeah, even with custom missions made a random mission generator ("Freestyle") would be a welcome replayability device.
Hey NO don't remove that! A player option could enable them or not.
Why so? The first is clearly a bug, and more often than not lures you into thinking a bigger assault is going on than actually is. There have been many times I went to my Trading Post because the mini-map flagged it as a major combat zone (12 or so dots) and I had to defend it, only to find a mass-grave. I mean; dead foes dissapear but when their graves appear there is a red dot *again*?
The second isn't needed either, luring you yet again into a false sense of being attacked. A real attacked person is taking damage beside poison/plague, so they would still flash on the mini-map. It makes more sense for me to remove such an indication from the mini-map, and move it to the hero manager (a poisoned/plagued hero's healthbar turning red or something).
The third is plainly true. It doesn't generate gold, so it's description should be altered to reflect it brings revenue another way from the Magic Bazaar and Marketplace.