i understand that if you do that when creating a thread that will happen. my question is: if you DON'T initally use that icon when creating a thread, can you go back and ADD or CHANGE an icon if you wanted?
As it stands now, no you can't change it, as that isn't even an option in vB. Other than the Ontopic icon, the rest are simply suggestions for now. If you can think of scenarios that it would be really helpful (given the current icons), I can see about hacking some shit together to make that change possible.