Well I have mixed feelings about this. On one hand, the main story path on normal mode is already pretty smooth sailing, and if you are struggling, you can already swap to both easy mode + classic combat mode which already trivializes the game, I feel like that should be enough for even very casual gamers. Plus, even as a disabled gamer, I kinda dislike the trend of completely eliminating any and all challenge from games. Part of the thrill is overcoming that epic boss.
On the other hand, this is a AAA single player game, where story and characters are a primary aspect, and if this helps even more casuals enjoy it, it's not really hurting anybody as nobody has to use it. Plus people like us can use it as a fun cheat mode after we have completed the game.
If they're going to do this though, they need to patch it into part 2, that game has some bullshit.