I'm going to chime in here and say that after playing Expat on the tablet version quite a bit, I have a new found appreciation for what she brings to the table than I did before. My personal opinion is that the "old view" is somewhat reflected in the OP, which is quite good, but may benefit from just a little more about what Expat does do....
First and foremost, Expatriette is a hero who is about dealing with the threats on the board..NOW. She has a great mix of cards that provide damaging powers in the form of her guns, and of course the RPG is an incredibly powerful Ongoing/Environment +4 damage card. Although she relies on equipment, she really only needs one gun out to actually function, so she is both ultra fast to set up, and to recover from equipment/ongoing wipes. When you compare her to another damage focused hero, like Ra, it can pay dividents to track the damage that they actually do through the course of the game. Ra can kick out serious damage, but even he has to build for max effect. A typical first turn for Expat? Play Assault Rifle and do 6 damage. A typical first turn for Ra? Play Staff of Ra, heal 3, then use his base power for 3 damage. Expat was twice as good as dishing out damage on this turn than Ra, and he is benefiting from his self-boost. If Legacy had gone first, it would be even more skewed toward Expat -- 9 damage (say 3 of Voss's minions wiped out), versus 3 points of self-healing and 4 points. Will Ra have "middle turns" where he kicks out double digit damage when Expat is still plinking away for 4 to 6? Yes he will. But that's the key point here--Expat is about steady, reliable damage from the beginning to the end. She specifically excels in a target rich environment--the more targets the better for her. Submachine gun loaded with recycling Hollow points allows Expat to single handedly defeat a Forced Deployment. She RPG's the ongoing, then Hair Trigger Reflexes/SMG's the minions.
And that's not to say that Ex doesn't have self-buffing options. Ammo recycling or building toward and Unload (or two) greatly beefs up Expat's mid and late game damage. I personally look for Hair Trigger reflexes as a priority play, as it can wind out accounting for a LOT of damage. My first tablet victory over the Chairman was largely because a triple boosted Hair Trigger Reflexes utterly trumped the recycle ability of the Underbosses, preventing any thug from ever getting to do anything once that combo was set up. And of course she has the ever-valuable RPG, one of the best single cards in the game. Removing Ongoings simply isn't something that every hero can do, and this card is incredibly flexible for when you are in a jam.
This isn't to say that she is the most powerful hero in the game--far from it. However she generally gets a "meh" rating from the forum, when she in fact does what she does very well. She is a damage dealer who sets up fast, recovers from wipes fast, and has a few exceptionally powerful cards, including ongoing and environment removal capability. She is the hero you want to cover for the "slow build but powerful" hero's like AZ.
Dissolv