The game definitely caters to the casuals a bit as you don't need to know combos or anything, just pick up and it's very intuitive. I also like that it's not execution heavy as I'm personally pretty terrible at execution (it's the reason I play T.Hawk in SF4). A lot of games become very iinaccessible due to their complex nature, an example would be kof 13, you are at a huge disadvantage in that game if you can't perform the hd touch of death combos that every character in that game has. This game could open up games to a wider audience as people won't be deterred by a large amount of mechanics.
The lack of being able to move left and right I think makes the game more interesting, your movement options are limited and you now have to calculate your divekicks in order to position yourself well rather than just being able to walk freely. Probably a bad example of something similar would be resident evil 1 or 2, your lack of options made your use of existing options and resources more important, and the game more interesting. If you could move faster/freely/without tank controls or did more damage/had more bulllets that game probably would not have been as interesting or had that feeling of every decision mattering. RE5 definitely lacked that as you had so many and such powerful weapons you could just blast your way through everything even on the first playthrough, which guns you used and how many bullets you used on enemies just didn't matter as much since there were so much more of each.
Once again, this games not for everyone, there are a lot of FGC in-jokes and the recent new characters have added some gimmicks and more complexity to the game. Oh and for the execution monsters there is a just-frame attack in the game. If you didn't figure it out by now, I love commas and run-on sentences.