to make sure everybody can at least try to speak a common language, when i speak of “pre-rooted”, or should be “un-rooted” by default, i refer to no su program being installed. That small program is required for apps to gain elevated system rights, ie. they can do more and modify the system to a larger extend compared to “normal” apps. This is comparable to the “Administrator” rights/account on Windows or the “root” account on linux or running commands with “sudo” on Ubuntu/Mac OS X. I am not talking of “rooting” device as explained by @keesj above.
An unlocked boot loader (which the FP2 might have) would make it possible to install such a “su” program relatively easy and that way use apps that would otherwise not function. We shall not call that process (of install su) rooting as @keesj explains above.
I argued that I think while the having root, ie. having a functional su program installed, is pretty useful for some users, the majority of not so tech-savy users does not really use it. The elevated rights to modify integral parts of Android apps gain trough su can pose an additional risk, i completely follow the reasoning of FP2 above in this aspect. I think it is better if users actively install that su program. so they know what they are doing. Additionally, some apps will not run if they detect the su program on your Android, another reason to make it optional.
I am happy that Fairphone will probably implement this change for the FP2, because I hope that will improve the experience of less technical interested users. Let’s hope it is possible to keep the bootloader unlocked or provide easy means to unlock the boot loader, so that everybody wanting to install su can do so.
Let’s see how thinks play out regarding Google apps ans support/means to build Android yourself for the FP2. @keesj, @rick : I can only recommend you to take a look at what Sony does with AOSP for Xperia . I think that is very great effort.
To get this discussion more constructive and back to topic, what do you all think something like AOSP for Fairphone? This has been part 3 of my original post since the beginning and i think that is something worth talking about .