Description
For most non-Meteor projects I use LiveReload to monitor my project folder for changes, pre-compile Sass & Coffeescript, and reload the browser windows as necessary.
Obviously, Meteor takes care of all of this for me. But LiveReload (and CodeKit, I believe) does one really nice thing that saves me a ton of time: if it detects that the only changes to the project are CSS/Style, it instantly injects the updated styles into the current page without requiring a full page reload.
This might not seem like a big deal, but at roughly 2-3 seconds per reload multiplied by hundreds (thousands?) of style changes and saves over the life of a project, that's some serious time and frustration savings.
I know this is not a high priority for the project, but this might be an easy win for developer happiness.