Yep, I understand it's the open beta. It's scheduled for Q4 release as far as I know and the changes made from comments are all minor. There are fundamental problems for me having fun with it that couldn't be made without making big changes.
I uninstalled already, but I think a higher difficulty would likely make it less fun for me. Fighting would still happen in the same way, clinking on the bad guys. But now I would need to click more and run away more often, neither of which are more fun for me.
The level of challenge on normal was fine for me. I died once and had to run away a couple times. My comments on the fighting being boring are more about the actual process of fighting, not the level of challenge.