Two issues:
First would be to create expectations that every fight close to a planet should have such background, so that's a lot of them to make for each type of planets.
Second (and more importantly) those backgrounds are fine in missions, but they effectively make the combat more difficult by lowering the readability of the battle. Small stuff like missiles get lost in the noise. That's the same reason the revamped backgrounds I'm working on will be much darker overall.
Well I guess it wouldn't always be every planet doing low orbit (ie, random whether low orbit or not), but yes, may lead to unrealistic/unpredictable expectations. But having to do it for every planet type would be tedious as hell, especially since this mod adds extra planet types.
As for the second point, I can also see why that would be an issue. Still, I had figured the rule of cool might trump background visual loss, but I have rage quit as much as the next person, so understandable from a purely gameplay/design perspective. Plus, I guess if I really cared, I could always just kludge together a sub-mod.
Curious to see those revamped backgrounds though!
