i'm rambling squeeks, no doubt about it
I would still see the Logic Board as the main component of a Notebook (I've already had the LCD replaced cheers, and I acknowledge this is the most likely/expensive part to fail). Because it has interconnectivity with the whole machine, a problem here is a problem everywhere. So replace it at the slightest sign of problems (as has happened to me) and you immediately open up the chance of knock-on problems created during the repair, or by a refurbished component etc..
By Frankenstein machine, I mean a MB/MBP that has experienced hardware problems, been in for repair, had components replaced, then been returned, identified as having more faults, been in for repair, had components replaced, then been returned, identified as having more faults etc.. until you cross a line where the replacements/repair process has cost Apple more than the MB/MBP was worth in the first place, plus you have a MB/MBP with more replaced components than original ones.
just because someone elses component on the logic board dies dosent mean its apples fault for selling you a faulty computer, so if this is the way you feel i suggest you give up on buying electronics
Whose fault is it then? I don't care who made what inside my

, it's got a big

on the box and it cost big bucks, surely I am paying for a functioning product that won't fail inside 3 months.
If it does fail, OK - electronics do, this is true. But now I have to endure a series of new and unpleasant repair shop experiences, potentially pointless repairs, damage beyond the original problem, all inevitable % consequences of handing over to a repair centre.
3 months is a poor show. And all I get is crap trying to get the thing fixed and refurbished components in a new machine etc.. ( I did mention I was a bit m-m-m-mad today

)