Thanks for pointing at this. Things tend to sum up indeed...
I marked this thread for solving in next release. Idea is to output JS only if needed, and to output it compressed when not in debug mode.
Inputs/Contributions are of course welcome. Will visit this thread again when we come to this.
In the mean time, you would win probably 60+% bandwidth and speed in those pages by just turning on gzip output compression in your web-server settings, so that the js files get compressed too.