I dont find any chalange so far in the game based on videos shown so far by Larian .
Maybe higher dificulty will have something else .
But like i said all chars in the party have available skill sets to deal with everything . There is so far for me no party cohesion . You want to have a party of 4 mages ....well they can jump like superheroes and wear all armor types , etc ( i get is 5E rules but srsly this might not be the best idea for an RPG video game - from fun point of view) .
Not saing the Tank , healer , dps , buffer - party type - is the best but sure was\is fun .
And since is all TB will be a walk in the park . At leasr RT could make me sweat a bit and make me play more cursive.
You cannot judge difficulty based on seeing a few videos of an alpha version of a game. Especially because those videos are there to show off content, not to show off an overtuned difficulty which keeps the player from advancing.
Your claim that turn-based is a walk in the park on the sole basis that it is turn-based is absurd.