Having been away from the site for a couple of months it's cool to see the huge number of changes and very sleek design.
Recently thought about tackling a series while travelling but noticed I had to download each video 1-by-1? I know it'd be a bit of work for you but perhaps zipping all the videos when you finish a series and adding a link to the series page next to the favourite icon would be cool?
Short answer. No. Bandwidth blah blah... It's been discussed before.
Another example why something like "Getting started with Laracasts Forum" sticky is paramount. For questions like this and many other, not to be repeatedly asked/answered since hardly anyone ever uses the search.
Hey sorry my response wasn't directed at you. It's something I suggested (Sticky) in another thread to help people get settled in easier and find stuff on this forum. Sort of like a site-map of various things that we deem important or useful.