Since SC are too cluttered right now:

Everything works great. Patched, quick download speed, install. Even the game itself runs on my ancient dual-core e8400 with 4GB of ram. So those min specs are more of a future-iterations guideline. For a dogfighting module and onwards. Stability is not an issue. No connection errors whatsoever

This is all in the discount module:

-AA seems to be disabled, but i do run SC in crossfire mode.
-The picture itself is quite dark and there's no gamma option.
-there's no upgrade console we've seen in the gamescom demo
-cannot enter into Aurora on the starboard side, i guess they designed only one door. 300i has doors on both sides.
-no access to the back end in the Aurora
-buggy ladder interactions
-i have no idea how to close 300i doors once i'm in or out of the ship. All i'm getting are climb-in and out sequences.
-300i bubble canopy visibility is exceptional, but you cannot move your head more than 80 degrees left/right. So no looking over your shoulder.