Yeah, it is definitely true that they added some pointless things. But that's true of practically every generation. The nice thing is you can basically choose to either ignore the potentially-helpful-but-'casual' things for challenge or nostalgia or whatever reason or use them as you see fit. It allows for more variability in how you want to play the game, which I like. One nice thing about Pokemon games in general, really, is that you can always tweak the difficulty to whatever you want by adding restrictions (Nuzlocke, etc.). The animation time is perhaps a problem, but I haven't had any issues with lag or loading times except for Horde Battles (though that might be partly because I'm not using the 3D).

Regardless, you should make your own mon game since Miasmon (or Beast Signer or whatever variation thereof) doesn't appear to be coming out any time soon. I would play it.