halmet defense was not touted as large scale PvE, even though it is a bit more so than some content because during the support phase, any number of people might be involved.

The current system cannot tolerate giant battles with a ton of people and enemies. If it did work, you'd basically see 39 people and 1 enemy and things would be popping in and out whenever you moved 2 feet.

It was clearly advertised as open-world, not instanced;
It was NOT advertised as an open world battle. Please post link to dev post where it was stated that hamlet defense had open world battles.

I find it really amusing that people voted in polls earlier that they wanted more instanced content, now content is instanced and people complain.