TL;DR: FFG please give imperial Raddus.
Please let me preface this by saying that I understand that this is a highly asymmetric game but if you grand me a little of your attention I will try to argue why the Empire should get a Raddus too:
So I guess this is what rebel player have felt like about the Experimental Retrofit since the Interdictor was released. The thing is that rebels now actually have access to almost all abilities that the Experimental Retrofit provides albeit with very different stipulations. The G-8 Experimental Projectors let you slow an enemy down. Rebels can do that with Q7 Phylons. Targeting Scramblers is a defensive die reroll just like Lando and Grav Shift Rerout lets you move obstacles the same as Ezra Bridger. Once again, all the rebel alternatives have very different requirements and conditions to use but the core effect is the same and this is what I would like for Raddus too. I don't want the Empire to just get a carbon copy of Admiral Raddus. Instead I would like a way for the Empire to set aside some portion of their fleet and deploy that later at a strategically valuable location. (A way that is not a mediocre, rarely played objective)
But why should the empire get this effect in particular and not another one like Rieekan. Well first of all because it is hella fun. Recently at the German Nationals I played a game against a Raddus Profundity list that went first player and choose Hyperspace Assault from my objectives. So we stared with a MC75, a Hammerhead Corvette and my Gladiator not on the board and then we dropped ships left and right onto the board. I have been playing this game for almost 2 years now and I have to say that game was easily the most fun I ever had in Armada. Restricting such a fun mechanic to one faction is just not cool.
And secondly I really dislike Raddus. I dislike him because he does not grant a technology or equipment but instead he grands a strategy. Upgrade cards should bring enhancements to my ships and squads but strategies should be entirely up to me as the player. Hiding some portion of your fleet nearby, ready to jump in is just a normal strategy in the Star Wars universe. If you allow me to be a little hyperbolic, Raddus effect being gated behind a upgrade card feels a little like saying: “No, you can't flank your opponent. To do that you first need to equip the “flanking your opponent” upgrade card”. Like what?! That's stupid. Strategies/maneuvers should not be gated behind upgrade cards. I really hope the game will get a rework sometime soon where setting a portion of your fleet aside and deploying them later is just an in-build mechanic instead of an ability that requires one specific card. But until then I think both sides should have access to this mechanic.
So my suggestion would be to integrate this functionality into the Interdictor and make it a combination of Raddus and Hyperspace Assault. Give it a new Experimental Retrofit upgrade “• Advanced Hyperspace Disruptors” that says: Before deploying fleets, you may set aside 1 other friendly non huge ship. Then you places X Hyperspace tokens in the play area beyond distance Y of both players' edges.
New Rule: At the start of any round after the first round the player who placed the Hyperspace Tokens can deploy a ship that he set aside at distance 1 of one of his Hyperspace token or at distance 1 of a friendly ship equipped with Advanced Hyperspace Disruptors. That ship cannot be deployed overlapping squadrons and cannot be the first ship to activate that round. Then he removes all of his Hyperspace tokens.
If he does not deploy, he may move each Hyperspace token to within distance 1 of its current position.
Now this is just one possible way to implement this functionality for the Empire and I am not particularly clingy to it. I just want a fun, balanced and reliable (because you cant rely on your opponent picking Hyperspace assault) way do drop some ships out of Hyperspace into the heat of battle as the Empire.
PS: FFG if you need a ship to package this upgrade with, here are three canon imperial ships that have interdiction technology build in: