#1 - waiting on developers to push server-side patch
#3 - these capes should already be ingame, you create them with their respective expert skill shards.
#4 - if you're referring to the items such as "modified first-age tiara" (for prayer) then these are already added aswell, obtained the same way you obtain the other skilling set items, but at a much higher action amount (I believe it's between 15,000-20,000 for prayer). These were based off of roughly how many actions it took a player to get to 99 on the hardest mode before the reset.