Interesting thougts and I can tell you that I have already spent quite some time thinking this overHans, did you know that in the i4/m50 you do not need the high executive pack and personal co-pilot pack to order individual options like driving assistant professional and parkin assist plus? (on other makes they are required of course, but not on i4, because car already comes with all necessary sensors)
I changed my order after I found out, it saves you money in case you do not want to go for Vernasca Leather, as buying the alarm + heated seats + laser + live cockpit + assist pro + parking assist pro is still cheaper than high exec + personal copilot. It's even more value in case you actually don't need/want laser lights and/or live cockpit (as in my case), as basically you have 12" and 15" inch screens anyway (i currently have the hud display and don't use it that much on the iX3).
High executive was more or less a no-brainer as I would have opted for the leather, heated seats, laser lights and alarm anyway. And do not forget that it will also add the Live Cockpit Professonal. It was not clear at first but I think that is the only way to get the Head Up Display. In addition you get 3D navigation with the Live Cockpit Professional and a 4-way DAB receiver (instead of 2-way). Don't know what to do with the 4-way receiver by the way. If you have any suggestions, please feel free.
I double checked with my dealer for the parking assist pro and the driving assist pro. You can order the adaptive cruise control, but it would not include the driving assist functionality. If you want the driving assist you automatically get the safety pack with it. Allthough most sensors may very well be available, my dealer informed me that you can not easily upgrade after delivery. Some critical parts would be missing (camera's maybe). So I went for it all the way.
Good to hear from a fellow dutchman!
Where are you located, how did you configure your i4, and what is the expected delivery date?