This debate puzzles me. *Anything* added to Armada with the designation "SSD" would be so only in name. The power of such a ship would be need to be toned down so far that it would not be a SSD as we know it based on canon. Such a ship will not, and cannot, do the Executor (or any other SSD) justice.
Ya'll should be honest and just say you want FFG to make up another ship (ala the Imperial Raider) that is bigger than an ISD, but is separate from the SSD class. Otherwise you just spit on what the SSD is supposed to represent within the Imperial Navy.
But you can say this about every ship in Armada, since Armada is not a simulation!
You can have some asking why pitiful fighters can even harm a super star destroyer. You'll have some snickering behind their hands as they ask why a single A-Wing squadron can't take out that super star destroyer. You can have people trying (Fruitlessly) to compare number of guns to x-y-z spaceship and use them to draw conjectures on what future ships will be, even though I think it's very likely these numbers are set arbitrarily by FFG to test a balanced gaming piece .
Armada ships are not obsessively accurate ships to the lore. They are playing pieces. As long as they feel the way they should in relation to their power, then they work as playing pieces in this game.
With all that said, I can believe in a Super Star Destroyer. Like X-Wing epics it may be an Epic ship only, running with special rules and requiring new command dials and perhaps with sectional damage, but to not include it is going to be disappointing... especially for a capital ship system that it feels natural to be a part of. I also don't feel it would be as forced as trying to jam a kilometer-long star destroyer into a game of starfighters... really, the only other home a Super Star Destroyer piece can have in a miniatures game is if they go up to the strategic scale. If not here in Armada then it's not going to feel at home anywhere else.
I also disagree on the issue of scaling disqualifying them, because whenever I look at the CR-90 I know it's not going to fit in a victory Hangar bay. Rather than break out my calculator and establish some ratios to make a 'ceiling', I take this as a sign to say FFG is concerned with things looking right and recognizable for the sake of having fun, than trying to build a simulation to "accurately" re-create screen battles.
Besides, if we were trying to do that, Executor would have something like two black dice on each facing. Because that torrential turbolaser broadside players expect out of an SSD was never shown on screen. The only thing I can remember it doing for fighting was shooting occasional broadside turbolasers at a Nebulon-B. Else, it just sat there.
They are not to scale. They are not approaching scale. So why are some using scale as an argument to say an SSD is impossible?