All of his career Schalke/Sevilla he was never the "work horse" of the middle line.
He is doing the job he never did before that Lucho invisioned for him (watching the back of the front 3) just fine.
With his limited work rate (he was never the long distance runner) and the defensive job he is tasked with it is normal that his offensive side will suffer for it.
You guys are "spoiled" by watching a decade of an unreal Iniesta-Xavi duo. THAT talent/ball-control/workrate coctail cannot be repeated end of story ...(well Modric could mimic Xavi just fine but that ship has sailed....).
Sure Rakitic is not perfect , are they better midfeilders than him out there? Yes, but it does not mean they would fit and mold into this TEAM like him.
Have you forgotten Fabregas already? He was all offense mindset and there for left defensive holes behind him all the time.
My point being is, as long as the team as a whole is functioning, dont try to fix it by looking for "perfection" on all levels and positions on the pitch.
By doing so you are calling for the "Galacticos" mentallity that plagues Madrid.
Ivan´s ball control in tight spaces is not the greatest but he has an excellent long ball on the counter attack.
Turan in Atletico just like Rakitic in Sevilla was the main offensive midfeilder of the team with minimum defensive responsibilities so i dont see how can he add more offense on the right midfeild behind Messi and Alves for gods sake
without the defense of the midfeild suffering.