I don't see a logical solution to provideing a default install location.
But i am open on that
(I could write our own installer application LOL)

This would add a "Location" - more later
Set "Platform" as "Disc"
Select ALL "DriverPacks"
Choose "Method 2"
Choose "GUIRunOnce"
Disable "KTD'
"Enable QSC"
Turn OFF ATI & Nvidia ?????

Script writes defaults to DPs_Base.ini

Still gives the more adventurous to set things as they want.

Location, location, location.

If the Basexxx.7z could set a default folder on C: i.e. C:\Dpack & add sub folders as needed and install itself to that folder the tutorial could say:
Install all DriverPacks to "C:\dpack\DriverPacks", all 3rd party to "C:\dpack\3rd party DriverPacks" and choose "Set Defaults" to run. Gives more uniformity to the project

As I said in a different post, I have a lazy streak in this old body and a need for simplicity.
This would create a PHD system (Push Here Dummy)

Just my 2 cents worth, or as Mr S would say, my 2p's worth. (been away for 25 years)

Stu