I thought the same thing about mixing it with diablo, I got the japanese version thanks to someones suggestion here and had as much fun as you can have with a game while not being able to read anything thats happening.
Mindless or not theres something fun about wading through 50 enemy soldiers at once and beating the crap out of them all.
As long as they don't screw something up I'm looking forward to playing this again, and being able to read what's happening and what I'm supposed to be doing!
I'm really amazed that this type hasn't been merged with more "RPG" elements, it seems like a perfect fit, and they started adding more item leveling and stuff so maybe thats the way its headed.