Well, it seems that if you would like to enjoy the OnePlus One smartphone with a 100% pure Android feel, you will be able to do so now thanks to the release of the Android 4.4.4 KitKat ROM for the smartphone. This particular ROM release is not exactly the finest one rolled out with several known issues surrounding it, including an inconsistently working gyroscope, alongside the loss of encryption features and VPN, but at least it is a start to hopefully better things down the road.
For those who have the intestinal fortitude to continue with the Android 4.4.4 KitKat ROM installation, you will be able to download it here from the forum, just make sure you follow the instructions carefully, lest you end up bricking your brand new smartphone. Hopefully a more stable version will be released sooner rather than later.