I would think it makes more sense to have the shortcuts when you swipe from the side partially and hold, instead of from the bottom and hold.

Two reasons.

1. You could fit more than 4 shortcuts. Probably 6 or 7. It would be more handy.

2. You could swipe from any screen to get the shortcuts rather than just from inside an app as currently.

Anyone know or speculate why they decided to go from the bottom instead? I just don't see the advantage of it.