Excellent piece of software!

I would like to have the following function featured: The possibility to limit number of downloads.

In other words if I add 10 torrents to my list, instead of it downloading all torrent at the same time (as it currently is) it should be possible to set that only the first 3 torrents or something is downloaded, and once they are done it will automatically go on downloading the next 3, until the entire list is done.

Is this possible to implement?