I don’t know if this has been discussed, but I’ve been toying with the idea that instead of a second Death Star, it could be something to the affect of the Imperial City floating above Endor.
It could be the complete center of Imperial Power. A place Palpatine stays. That way if you destroy the main hive of the Empire, it’s a much bigger hit. There’s some finality to destroying their headquarters. I wouldn’t have it be weaponized, just protected by the shield on Endor. You could have the movie play pretty much as is, but change the mention of a Death Star. It really wasn’t a looming threat for Endor, at least.
You could even go the Lord of the Rings route, and have the Empire destroying the forests of Endor to fuel their war machine.
Just a thought. It’s something I’ve been mulling over lately.
A shoddy mockup of the throne room above a city scape, though I’d have it more dead looking. In the vein of Nostromo.