Considering most mobile games are shit. I would be willing to waste a little bit of time installing this one.
You would be surprised how fast mobile games are getting better at this point. In a few years, even hardcore gamers might migrate to mobile.
I think the takeaway for mobile from E3 for me is, until recently and since apps began on mobile most were made by no name people who put some time and effort into a game and released it to try and make their name. Some, very very few did well, most just went into the oblivion of a billion others. Now triple A dev's and studios are going for it a bit more and this is never a bad thing for a newish and growing market. But honestly it's not for me.