Installation took about half an hour, and after rebooting into it (save for the in-between GRUB update step in Manjaro), I opened up terminal and looked for updates, to which there was none.
I then searched for VLC and also found nothing, double checking with a search of "h264", which obviously yielded nothing.
To summarise: it is much too early for me to test Leap. In other words, I should wait until it's out before an actual test.
I can't really say much else, just because there isn't really anything to talk about with Leap - GNOME 3.16.x is GNOME. I am literally throwing my hands into the air because I have nothing (XD).
I think it'll be mature around November, so I'll wait a few months before I test it again (hopefully I remember on my own).