I loved it, but I love metal, so I think that's kind of a requirement for enjoyment. Like everyone says, the RTS sections are mediocre at best. But I drove around and got 100% of the collectables and spent as much time just screwing around as anything. I'd love to see a sequel, especially one with more focus and no RTS stuff. But with my luck they'll make it tower defense or something.
If you're looking to save the most it does seem like the type of bundle that will have a happy hour, but honestly you're only going to save a dollar or two by waiting and it could be a week or two before we have happy hour, if at all. I'm gonna spend the $4 because it's worth that to me but I'm waiting on happy hour for the Evoland bundle.