Thank you for the background explanation and the link. KIT is actually my Alma Mater (cs).
You are right the overlap is not that large. I was thinking about the WissZeitVG, Exzellenzstrategie, Tenure-Track-Program.
As for the Länder, I personally think the transition between the Abitur and university could benefit from stronger collaboration between the involved ministries. For example by better aligning the educational goals of high school to the demands of universities and by integrating education research into schools. By this I mean the continuous application of the results of educational research to schools and the constant monitoring of schools.
Some more background information on the laws and initiatives you mentioned.
The WissZeitVG falls within the competence of the federal government due to the exemption regulation of Art. 74 I Nr. 12 GG for labour laws.
The "Exzellenzstrategie" and the Tenure Track Programme are cooperations between the federation and the states based on Art. 91b Abs. 1 GG: "The federation and the states may co-operate on the basis of agreements in cases of supra-regional importance in the promotion of science, research and teaching. Agreements focussing on higher education institutions shall require the consent of all states. ..." (original: "Bund und Länder können auf Grund von Vereinbarungen in Fällen überregionaler Bedeutung bei der Förderung von Wissenschaft, Forschung und Lehre zusammenwirken. Vereinbarungen, die im Schwerpunkt Hochschulen betreffen, bedürfen der Zustimmung aller Länder. ...")
