I couldn't agree more. Local elections matter a lot. Especially when local elections in places like Seattle, WA are generating insane amounts of campaign money.
That, and the Supremacy Clause. Whatever local laws you vote for are superseded by federal law. By definition, this means federal elections matter a lot more than local elections (even though local elections have a more immediate short-term impact on the populace).
Hopefully the federal government deschedules marijuana soonish.