I like this game a whole lot better than Netrunner, but then, you are asking this on a SW:TCG forum.
Star Wars has never been as big as Netrunner, so I wouldn't say it's dying. For every person dropping the game, it seems there are one or two more looking to pick it up. I do think that the Star Wars title means a lot more casual players collect Star Wars than for other LCGs, but I have no evidence to back that up.
As to your question about whether there is anything worth playing over Netrunner, I think that depends greatly on what you think Netrunner's qualities are. For one thing, Star Wars is a lot more visceral. You see units getting deployed and destroyed. You can feel the ebb and flow of battle. In Netrunner, it's slightly more abstracted and feels much more mind-gamey to me. So if you want combat, Star Wars is good. If you want mind games, Netrunner trumps. But both have their fair share of bluffing, though again, Star Wars falls a little behind Netrunner in the amount of bluffing. I haven't been keeping up with Warhammer 40k announcements, so I don't know how combat works, but it's possible that if you want that unit-to-unit combat, Warhammer 40k could cover that base for you, making Star Wars redundant in that respect.
Why do I like Star Wars? Well, it doesn't play as much to the mind games of Netrunner, but it does take a lot of thought. The combat phase is like a puzzle as you try to predict how your opponent will allocate his forces for defense when you attack. Sometimes you want to invest more attackers than you need to draw out more defenders. Other times you send a small force to see if you can get him to spend a defender there or you just get free damage.
You're also trying to balance a lot of things. You want to have a strong board presence, so you need to play cards from your hand. But cards in your hand also power your edge battles, and if you don't have a strong hand for the edge battles, your units will not be as effective in battle. And while focused on these two aspects of conflict, you also need to watch the Force
Struggle to make sure you can keep the balance of the Force with your side. I love all these moving parts.
Another thing I love is the hand-draw rule where you draw up to your reserve every turn. It really lets luck take a back seat to strategy and tactics. It's fantastic!