This game is far from casual, it is inherently complicated, deep and intransparent.
1. The game is in EA, not all classes, specilizations, prestige classes are in yet.
2. The combat system is all about resource management and you can have multiple bonus actions and actions through various means. A rogue can get a second bonus action. The fighter has a skill that allows another action and haste gives you two actions per turn as well. There are likely a few other ways to up that already and there will be more in the later game. Actions do not also equal attacks, so it is far deeper and more versatile.
3. All stats are good for all classes. I am still annoyed that wisdom is my dump stat, because it seems that many skillchecks for traps and such use wisdom. If you mouse over them in character creation you get a rough explanation of the benefits to your skillchecks.
I also find the game mediocre, mostly because of the game not telling you anything how it works and therefore being ridiculously difficult. I also do not see any resemblance to it's predecessors. Mind you this is all because of the lacking fluff, not because of the DnD ruleset, that I know just as much about as 2nd edition 20 years ago.