I'm all for having less traffic on this list, but I don't have a good
recipe for that. I doubt that splitting the list will really help much. As
others have already said you will probably end up with two lists that have
mixed conversations from the topics of both lists. And it won't help with
the problem that there are more and more clueless posts where it is very
clear that the person asking didn't even think a second about doing some
research before asking here.
Try and see.
Kai