Hello Everyone
With 4.3.1, Barricade was replaced with Sauron's Deadliest Servants, which allows the Nazgul to receive their upgrades. This change was made because there were bugs that occurred when the Nazgul Upgrades were acquired when you used Influence of Sauron on the Citadel.
Now I see the point of why this change was made, however, it completely removed on of Mordor's Spellbook powers for something that they technically already had. Also, I feel as if Sauron's Deadliest Servants is too good of a Spellbook power to not get early on, because it really helps out the Nazgul.
So the suggestion is to put Barricade back into the Spellbook, and make the Nazgul upgrades available once Sauron reaches level 5. I think this is a better way to implement the Nazgul Upgrades because, in my opinion, they are always a priority to get as soon as possible due to how useful they are. It will also allow the Barricade Spellbook power to still be in the game. I also think this will not make Nazgul Upgrades too easy to get because it is hard to get Sauron to level 5 very quickly, and you would still need to pay for the Upgrades.
I would love to hear feedback on this idea.
Greetings, Hamanathnath