I agree with the Kpt about the auto-installer. We modders are a minority and as such GWX has to be catered to the vast numbers of players who want to just load & play.
Besides, if GWX is all it's cracked up to be who needs to mod it (not much pressure then guys
)
Of course, there will be some who will want to personalize their installation but that shouldn't be too much of a hardship to inspect and make changes.