Mass Start 60: Awful, why on earth does biathlon need such a complicated and even unfair format? (since the first shooting bouts will be at different points in the race for half the field, that's just unfair)
Flexible mixed formats: I don't care
Junior Cup: Nothing wrong with a Nation's Cup there, although like in the IBU Cup it probably doesn't mean that much
Electronic targets: They may make it more fair
Extra quota: I'm not entirely sure how this works. They take the IBU qualifying list, remove every single athlete from every country with at least one WC quota, and the top-8 left gets a WC quota regardless of their results? I wonder if that opens the door for Australia or even Brazil to have a WC starter (which in the women's case would be Jill Colebourn and lovely Bruna Moura respectively). Personal start quota for the IBU Cup total winner seems excellent.