Perhaps if possible, we could get multiple instances or areas for Ares? Such as people will be at times ported to the Twilight Temple Ares, but then other times people can be ported to another instance that holds another boss, perhaps a different skin, less HP, etc. This would be so not hundreds of people are just grouped into one small area.
That or just move it to a bigger area, cuz come on, everyone in one small area is just ridiculous.