Just because something doesn't work, doesn't mean you shouldn't do it. I think they should take a look at redesigning how the tree works/looks. Her is a idea that would clean up the tree and just show the item they are clicked on, the items they can research now. While showing items that have been r...

As a casual player, I was playing and researching the Artillery and realized I would not be able to make the Artillery shell as I had not researched tanks yet. I think this should be part of the requirements before you can research the Artillery.

Well, that's my two cents for now.