But what if Lennart's strength is in design, not maintenance? As I describe myself, people come to me if they need a problem solved. Once I've found the solution, looking after it gets taken away from me.
Why do you want to ignore Lennart's strengths, and harp on his weaknesses?
After all, take Linus for example, how much kernel code does he write nowadays? I understand the answer is "nothing".
Why SHOULD Lennart have to look after his stuff that he's designed, once others see its value and take it over? Or do you think that Linus should be using a large chunk of his time looking after git?