The Dome's collapse was slow, nobody was ever in danger. The Sully is too small to host much more than basketball or hockey, both of which have ample venues. 
Removal of snow, needs to be rethought out. "Why on earth?" Because we are Alaskans and you should know, you've lived here long enough to know that we just don't throw our hands up and quit. I mean if your attitude was building the AlCan, the first bulldozer that got stuck, you would quit. Doing the Klondike? Oh no, way too risky. Seriously, though, this adds too much to our city and our state to just quit. Not to make light of your concerns on safety, it needs to be looked at. I think if successful people are willing to invest lots of money, they don't want to see another collapse.