"My guess is most of your growth will come from that core of early adopters in the graph, and these folks have nice data plans / fast wifi and won't mind the 40

"My guess is most of your growth will come from that core of early adopters in the graph, and these folks have nice data plans / fast wifi and won't mind the 40MB download at all." See my comment in this thread about low resource mobiles, or the article on BZR being overtaken by Github and complaints about resource use from low memory laptop users. Please don't assume technological knowledge or early adoption means plentiful resources from the user.