I do wish he prepared his son better.
What about his son?
Franco knew he was not a monarch and he did not pretend to be. I do not know anything about his son, but a desire to see the son inherit his temporary office is misplaced, if that is what you imply.
However, I wish Franco prepared his nation better. Especially, the gross mistake of entering the EU should not have happened. In the end, the bear lost and the dogs won.