Regarding Shield Generator:

I’m okay with the idea of adding a Rogue One shield gate device on the moon of Endor if Ady wants to go through the trouble of adding one.

As to the DSII - NO. We should not see any blue glow around the Death Star at all. I’m for seeing it after Lando orders the fleet to pull up and a couple fighters do not make it. But it should be invisible until a ship hits it. Remember - DSII is actually a TRAP set by the Emperor. It is meant to look unfinished and relatively unprotected. The shield generator while functional - is also part of Emp’s plot. The Rebels were fed intel from Emp himself, and everything about the attack at Endor was a trap laid for the purpose of wiping out the Alliance in total, both ground and space forces. The dire consequences of that fact were lost due to the overuse of cuteness and laughs. So adding a shield gate and showing a forcefield around Endor is not that necessary in terms of strategy. It is meant to look vulnerable so as to goad the Alliance to attack it. Emp actually being there himself assures that the bait is taken. Everything about DSII and Endor is a trap.

Of course Admiral Akbar says it best.