I noticed how rapha most of the time leaves one shard/5hp bubble up at some places (like taking 2 of 3 shards by the SG on dm13). Then I watched this: http://youtu.be/gfIU91eLO9Q?t=15m20s and I see tox doing the same thing with all shards. Watch it and you'll see.

This does look very intentional and I fail to see why players do this. Can someone please explain the benefits of not taking all the shards/hp?