Well, needless to say, my last computer was one of the very first run of Intel MacBooks and it was fraught with problems.
The case was replaced first for cracking (outer), again for yellowing (inner), and third (outer) for a questionable 'repair' job by the local Apple store in which they just "shaved off" the offending area.
Due to persistent screen flickering, two batteries and three logic boards were tried to no avail. Finally, after the optical drive died and the screen flickering and case cracking had yet to be resolved, the guys at the local Apple store advocated for me/got sick of me coming in so I got a free replacement.
Ironically, my G4 Cube benefitted from another dying MacBook's optical drive and, after some tinkering, still works like a champ.