I got lucky and fiber became available in my neighborhood around the same time I noticed how painful pushing images over cable was. Hopefully you'll get that o

I got lucky and fiber became available in my neighborhood around the same time I noticed how painful pushing images over cable was. Hopefully you'll get that option soon too. For the unlucky, maybe we can take advantage of the fact that most image pushes have a predecessor which they are 99% similar to. With some care about the image contents (nar instead of tar, gzip --rsyncable, etc) we ought to be able to save a lot of bandwidth by using rsync on top of the previous version instead of transferring each image independently.