1) The block list is extended to include more blocks for higher donator ranks (+1 per rank).
2) we currently have the option to skip (30 points) or block (100) but if you're a super donator+ you can skip for free. What about if there was a third option that allows you to skip your current task but maintains your streak (just like in osrs) and this would cost 70 points to do. This cost would apply no matter your donator rank but would decrease by 10 points each successive donator rank.