I think this is so true - we also went for more plug points as Iam sure it will be much messier later on to add extras. We looked at it and thought it would be useful to have a double plug on 2 opposing walls in the bedrooms for future perhaps a bedside lamp one side and a desk with a computer on the other.
Thankfully I have a fairly handy fella who can do quite a lot of the post hand-over stuff. I am not too bad with a tool box myself and I think we will have fun adding finishing touches (hope we still feel that way after handover)