After install the unnecessary packages like microcode is being removed automatically. As for the video drivers, this is a discussion we internally also have, the problem is that a lot of users don’t know which driver they should pick before install.
The Nvidia-installer does this automatically and there’s also the issue with the Hybrid cards, which is a linux wide problem.
As for the Kernels, we are working on that and we will present a new feature on the July release concerning this.