First, We have quite a few of these systems and we have not had that many failures. While we have had our fair share of problems, I don't see this system as so problematic as some have stated.

I have a suspicion a lot of the issues people are having is the dual graphic engines these systems have. Here's a good Apple TN: MacBook Pro: How to determine which graphics processor is in use.

You see, the OS & system firmware decides which Graphics services to use: The internal Intel CPU HD Graphics 3000 services or the dedicated AMD Radeon HD 6750M graphics processor.

The OS needs to switch between them as you jump from the finder services which uses the built-in CPU graphics engine, to the application that requires the more powerful graphic services using the AMD Radeon. The fact you are powered via AC vs. battery also effects things as well. Here's a good Apple TN that goes over how to bias the system: MacBook Pro and MacBook Pro with Retina display computers: How to set graphics performance.

I would recommend doing the following install a good temperature monitoring app like: Temperature Gauge Pro. Make sure your systems firmware is also upto date: EFI and SMC firmware updates for Intel-based Macs as starters. Then I would look carefully at my apps making sure I've got the newest releases.

OK, here's the last thing here on this: download this app: gfxCardStatus. It will also help you identify what graphic services is running.

See what you discover on your usage, and if you do encounter problems see if you can identify if the graphics services is the issue, or something else. Let us know what you discover.

To your questions:

1: If Apple does find something I'm sure they will offer a fix as it likely is firmware or OS based issue. If its a hardware issue then Apple will address it as well. We have no crystal ball here Apple is in the drivers seat on what they will do.

2: No, you can't change your graphics services it is what it is. Review the IFIXIT guides to get an idea how your system is built.