Glad someone has recognised I'm not a gorilla!
(*really cheeky grin*)
Seriously though, my feeling is that in general any major decision should be taken by the community as a whole - mission-critical debates get their own topic in "Key development issues" and topics which are major but not absolutely critical get their own topic in the General cousin of "Key" issues.
Smaller issues can be rounded up under a topic or two in General Issues.
I do intend to start using polls a bit more for decision-making than topics for debate, since we can get both a general feel for something and specific comments underneath.