Comment A totally different game (Score 1) 50
I tried Firaxis's XCOM as soon as I could, seeking the flexibility of the first two games; the devilish plays you could pull when in a tight spot (prime alien grenade - toss at buddy - buddy picks it up - buddy lobs at alien), shooting or running as your speed (TUs per turn) allowed, switching equipment on the field, breaching walls for your teammates... all were fond memories worthy of revisiting with a modern engine.
The first cinematic of the landing scene gave me a huge grin, and it was mostly disappointing from then on. Its walk-shoot-shoot; you die with the gear you brought; you can't shoot at walls because they've done nothing to you. I played four missions and didn't get to experiment with classes or see whether you could ever learn Mind Control.
My hopes are now on UFO: Alien Invasion. Bit rough around the edges but coming along nicely. If you share my feelings, give it a go.