Venus conjunct the sun can make one listen to their 'advisors' more than being the king to lead their own lives. Not necessarily bad, but I have seen that. On the other hand, Sun with venus can sacrifice lesser pleasures for a greater goal. Sun/Venus combos make a charming personality though, too. I sometimes call Venus/Sun combos the 'hollywood' combo....both good and bad.
I have this combination in Libra with Ketu. In my experience, the people I'm closest to in life believe that the kingdom I'm building isn't worthy of existing within their kingdoms. In other words, they place my kingdom in the lowest hierarchy in comparison to the "superior" kingdoms they've built and therefore expect me to make more sacrifices for their kingdoms/ give up my kingdom in order to manage the things they don't want to deal with in their kingdoms. And of course, I do it, because Libra Sun makes me feel as if I don't have any other options.