Carlos Soriano worked a bit to swarm animations, and he made them a little bit faster and symmetric. Personally I love it and I think that GNOME should keep its “cartoonist” and “plastic” style they always had, and things like these help!
Even if app launcher animations don’t add some extra functionality on Shell (apart that shows the 9-dots app container box), it will certainly be one of the Shell highlights!
Remember, that this is not sure that will land on GNOME 3.14, it depends from the final outcome.
Yeap, the pressure goes to Carlos! Good luck with it!