Perhaps some more hardware choices (their hardware is really nice, but I wish you could choose "heavier with more ports", for example). A simple way to do this would be to license MacOS for a few workstation-class machines, since a Mac is basically a UEFI PC with a few specific bits of hardware.
And this is largely what drives Hackinstosh these days, but Apple is never going down that route. With the original Apples being cloned (you used to be able to fly to Hong Kong and catch a train out to Shim Sha Tsui in Kowloon and pick up a beautiful Apple clone and accessories and spend a few days and fly back (from Sydney) for not a lot more than buying a genuine Apple) they learned their lesson in their mind and decided they were a hardware company, and they still are (just more consumer hardware these days, but some signs of some return to pro support in some areas).
There are some fantastic Hackintosh systems out there, but they are all in breach of the EULA for OS X / Mac OS, so that really should mean no photog (with a reliance on protection of IP) should be using one out of principle in addition to the genuine legal issue.
Apple do lots of things right (most things, really), but at the top end their approach of "we know best" that works for consumers isn't really right for pro users in many cases (in some it is). Some more flexibility there would help.
The other thing, regarding fixing products and so on, is to look at local consumer protection laws. Given the higher value of their products I know, for example, that in Australia they've been smacked down for refusing to cover things under warranty because it was outside of their stated (express) warranty, but within what the law considers a reasonable time for them to have to cover given the price points. They've adjusted things to avoid further unwanted attention from the authorities. Depending on where you live, you may have that route open, too.