So each of these "Sets" is themed, both for flavor and for mechanics. Maybe one of these sets is a "Storm Trooper Rush" theme, The objective might have some sort of boon to aggressive playing, while the 5 cards associated with that set all involve low cost storm troopers and event cards that capitalize on a card for card trade… your disposable troopers for their more costly heroes and utility characters. (That is just a hypothetical). Some sets will feature resource generation, while others might feature a character: Vader, his lightsaber, force choak, etc. So though you only make 10 decisions on your deck, each decision will have a larger impact on your overall deck (1/10 of the total rather than 1/60 in a game like Magic).
This opens up one major complaint: "why should I take these three crappy cards if I only want these two awesome ones?"
The the solution to that situation is that this is a fast game with a lot of card draw, and a lot of cards being thrown down.
At the beginning of your turn, you draw back up to a hand of 6, regardless of how many cards you have left over at the end of your opponent's turn. This means that you dig your deck faster than you may be used to, so finding that one copy of Darth Vader isn't as bad as you might think. But what do you do with all these excess cards? The battles at this game happen at objectives (the same 10 you chose when you built your deck). Before each combat, there is a silent auction to see who gets to go first (aka Edge). Winning the "Edge" not only gives you the first swing in the fight, but also lets your cards use the best of their abilities. The combat icons come in either black or white. Black icons are always on. White icons are only on if you won the Edge Battle. Draw 6 cards a turn, play 2 of them. Use the others to bid on these Edge battles to give you the leg up on your opponent.
Draw to a hand of 6 cards, attack your opponent's objectives, bid for Edge, duke it out, and then lather, rinse, repeat.