So what's to prevent griefers from upping them at a rear base and leaving them sit on the runway to take them out of play?
That is the same as hiding carriers. If htc wanted to stop this behavior, they could. Just off the top of my head, 10 minutes of inactivity while sitting on the ground results in loss of the formation.
What if they come in at 2-5k?
Something else you missed. No bomb drops. Below 10k AGL bombs don't release. Which should be the case for all heavy bombers regardless of large formations.
There will be an angle and timing to one-shot the major targets at a base.
You don't know that yet and it all depends on how committed htc would be to making it work.
I can come up with counters to anything you bring up. Getting rid of ".salvo 1" for heavy bombers is just one way to put an end to that. And other game changes were already discussed to prevent this, but you didn't see them.
That problem only gets worse if you've got a couple guys working together with a couple of these giant formations. You're giving 2 guys the power to insta-level a base.
As opposed to giving 1 or 2 fighters the power to ruin bombing in the game. Good point there.
In my experience it's far more common to see two than four.
Exactly the point I made to negate Arlo's concern.
With the added dispersal, would it not make bombing at reasonable altitudes far more ineffective, to the point of not being worth it, particularly with the smaller formations?
That is a benefit, not a detriment. The accuracy of bombers is too gamey as it is. Bomber pilots would have to get used to a different performance standard. But your worry was that they would flatten a base. Taking away the laser accuracy works against being able to "one shot" base structures.
If you read the whole post you would see that my suggestion was made with major changes of the game in mind for the future. which included taking the focus off blowing up buildings as a function of taking bases.
I have no wish to throw this feature in the game to wreak havoc on game play, but it could be done right now with the right balances in place. Later on with other changes this idea could be even more viable.