It's been confirmed that you can access the Grand Underground before the post-game and thus catch a lot of Pokémon outside the Sinnoh Pokédex during your walkthrough.
Electric types got fucked over through removing hidden power, but apparently normal types still need to be nerfed by depriving them of return/frustration
It is commonly believed that ice is the worst type. In actuality, normal is far and away the worst type since there is only 1 viable normal type (chansey/blissey) and several good ice types