And Apple won't care if iFixit throws another hissyfit either. Apple employs designers and engineers that build stuff like this for a living. Somehow I doubt they all sat around in a meeting and said 'lets make the battery impossible to remove so 3 years from now people will have to replace their laptop with a new one'.
The rMBP got some of the best reviews, many calling it the best laptop Apple's ever built. Then iFixit 1/10 in repairability and suddenly everyone's trashing it. I just saw one review calling the retina display a "brilliant boondoggle", saying its not a product feature but a marketing one and that no one knew they wanted it until they saw it (wow imagine that, the average joe doesn't always know what's possible or what he/she wants until it's shown to them).
Oh and here's why there is no Ethernet port on the rMBP or MBA:
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to be fair iFixit was dead on giving the rMBP a 1/10 for repairability. Lets see if anything breaks on it it would not be work repairing. Most of the major parts are soddered onto the MOBO itself making them impossible to repair and replace. It is a consumer grade product all the way to the core.