I agree with what you're saying, although there is not really a reason why this can't be done with BT client-side. It's just that, AFAIK, no torrent client supp

I agree with what you're saying, although there is not really a reason why this can't be done with BT client-side. It's just that, AFAIK, no torrent client supports this. BT will, by default, prefer to download the least popular blocks. Client-side just needs a setting to "stop downloading after X blocks", divide your 1TB by the block size, and that's how many blocks you need to download to get 1TB. I will add though, unfortunately with this torrent (at least the one that I am attempting to download), simply seeding a certain number of blocks is not very helpful. The files are mostly in a few giant zip files.