I like Jimenez but he was far from a proven player before he went to Wolves. And there is still no guarantee he'll make it at a bigger club even after his successfull two seasons at Wolves.
He didn't make it in his only season in Atletico (I don't count that against him though as he was just coming to Europe and it's usually difficult for young offensive players to immediately stand out in Cholo's system) and has scored in average 6 goals/season in his three years at Benfica. He's a late bloomer and is playing in a team/system that fits him perfectly but there was a reason why no big club was interested in him when Benfica was willing to offload him for cheap. Which they would never do if he'd be their key player at that time.
Atletico play their own weird special brand of football. Like you said, not ideally suited for players with flair. Even Joao's been having a tough time. Leipzig or Ajax would've been perfect for him.
As for the mexican wolf, he seems at home with his new pack. Manu and Juventus have made bids for him but he doesn't wanna leave and he's a fan favorite. His contract runs till 2023...
I really like his style. He's so fluid and plays with great vision.