I hope to see some Legends upgrade cards at least - please bring Thrawn, C'Baoth, and Karrde in somehow!

I'd like to see a Tector-class star destroyer at some point (the hangarless one which the Falcon skims the underside of in ROTJ).

Yeah but... what does the rest of it look like? A normal ISD? Well why not just cover up the hangar then and you have your Tector! Seriously, if the design isn't more than just a side-step of an existing design, why bother? At least the wingless liberties lop off a third of their hull for a sleeker profile...

Hard to say where Armada is going to go, though we do have precedent for Legends things "Becoming" canon. The Tarkin novel gives us Victory star destroyers again (And Immobilizer 418 prototypes actually, along with a couple of CC series from Rebellion). If anything, I think this suggests that a lot of the indisputable fixtures from the Legends continuity stand a good chance of returning, like Z-95s, and the like.

So my vote is more of the EU whether it becomes canonized or not, per LFL's approval (no sense in making the 418 if Ep 8 or whatever features a brand new hyperspace-stopper in the plot). It may be a while before we see sequel trillogy things... in part because the only capital ship we might end up seeing is the Finalizer. At least X-Wing had one opposing craft from each faction to pit against one another in their new core set. The Rebels are heavily outnumbered so far in 7, so it'll be a while.

I doubt we will be seeing clone wars stuff, at least in the scope of the clone wars. Again, any military equipment from that era is going to be seen through the lens of the galactic civil war. This means Venators are on-par and just as outdated as the Victory Star Destroyer (The Acclamators moreso). Any Separatist equipment will appear as appropriated by the rebels. In the future fans may create their own clone-wars era battles by restricting ship lists, but I don't think FFG will create products specifically for that era.

I suspect this is because while there are many and constant fans for the original trilogy, the prequel trilogy is still polarizing. The Clone Wars cartoons spice up the era sure, but can you say anyone was as excited to cosplay as one of the CIS members as they were to cosplay as Imperial officers? The future of Star Wars is the original trilogy and onward... the prequels are reduced to nothing more than sourcebook material and filler for the future. The only reason we'd be back there is to set up events for more exciting things in the future.