One of the things I've found is how drastically wave two cards strengthen wave one ships. I'm currently running a three X-wing build that is just disgusting. I shot down a seven tie swarm with little effort and acomplished all mission objectives in the scenario we were playing. Before wave two I never would have played these pilots together. Now however their ability to play off each other and use their abilities and upgrades to not only deal out some pain but avoid it as well makes themincredible.
Some combos I've found;
R2F2 + stealth device
Black squadron pilots withveteran instincts.
Marksmanship on YT-100 with gunner
firespray with heavy canon marksmanship and ggunner
wedge with expose, andBiggs
i know there are more, these are just some I've played with the most value.