-What it is
Quality assurance (QA) refers to the engineering activities implemented in a quality system so that requirements for a product or service will be fulfilled. It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention. This can be contrasted with quality control, which is focused on process outputs.

Two principles included in QA are: "Fit for purpose", the product should be suitable for the intended purpose; and "Right first time", mistakes should be eliminated. QA includes management of the quality of raw materials, assemblies, products and components, services related to production, and management, production and inspection processes.
Suitable quality is determined by product users, clients or customers, not by society in general. It is not related to cost and adjectives or descriptors such "high" and "poor" are not applicable. For example, a low priced product may be viewed as having high quality because it is disposable where another may be viewed as having poor quality because it is not disposable.
Stolen from Wiki

-Why change is needed
CCP QA does not meet ANY of the requirements of QA. Who ever is in charge of QA and their link to the Devs needs to be restructured at this point. They are NOT doing their job, its as simple as that. Results! they do NOT produce them.

List of problems CCP could have fixed before reaching the player (Tell me more so i can add them!)

NO SISI SERVER (even CCP EVE knows they need one but i guess Dust QA is special (DERP!)
Terrain LOD Glitches
Terrain invisible walls
Terrain stickiness and movement flaws (cant walk certain places without hickups)
Major weapon imbalance (LR and MD not working as intended)
RDV's with no AI collision avoidance.
THE ISK BUG (how do you manage to do that BTW?!)
Passive booster bug
Drop uplinks can go in walls
Splash damage from explosions failing to do any damage even to you from your own grenades while standing right on top of them
Poor hit detection (valve could do it since CS source what is your excuse exactly?)
Racial suits that bonuses are useless or do not actually work.
Skills that do not work as intended or provide no bonus even though one is stated
Almost every event CCP has run has had some sort of hiccup
You can fall through floors
Poor FPS in PC
Memory leaks around every corner
Oceania servers wont do skirmish or domination

HELP ME ADD MORE!
Basically Whoever Set up DUST 514 Dev team as well as their HR for setting up this development studio had 0 Idea what they where doing.