To begin, I am really excited.
Now, I remember the Alien Colonial Marine fiasco very well. For a while, I was helping to write on Sega Addicts (a fan site). If you listen to our early podcasts, there is SO much optimism and confidence in the game and Gear Box. This was crushed. Just utterly crushed. Luckily SEGA fans are used to being optimistic and then crushed. We call it the Sonic cycle.
Just remember, you can't spell aliens without an L, I, E, and a S.
But they fool me every time. I legitimately think it will be good this time. I am going to buy it very early on. I'm excited.