1) Make it so that posts from lower ranked members don't bump the thread to the top (ideally up to Member)
2) Get rid of the Announcement board completely and instead charge ICOs a fee to list here and once they do they get their own sub board in the Alt Coin section. If this happens then paid bumping is useless. Many of them would probably like having their own board and they could even be responsible for moderating it or mod it how they like.
#1: totally agree.
#2: Would the ICO be able to rename/rebrand itself? Wouldn't the list of boards turn into a similar mess like the ANN board is now? How would the ICOs be sorted in that list?
I wouldn't mind charging a fee as that would take care not only of spamming but also eliminate many cheap scams, but there are some potential loopholes I think.