What's the function of 让 here? I read this sentence today :


  你想让我给你打电话吗？


Translated as : "Do you want me to call you?"

My question is :
What is the function of 让 here?

I have read that 让 can be used to form causative sentences but I don't think that one sentence has any correlation with causative.
Why doesn't the speaker just say :


  你想我给你打电话吗？


instead???
see examples for 想让 at bkrs: https://bkrs.info/slovo.php?ch=%E6%83%B3%E8%AE%A9 and iciba: http://www.iciba.com/%E6%83%B3%E8%AE%A9: 想让某人／事物做某事  want sb./sth. to do sth. (approx.= want to cause sb to do sth.) it would seem to observers that, 让 reinforces wish，(wish is to cause action), redundancy not uncommon phenomenon in Chinese, 

想 has many meanings besides (6) 希望, 想要 hope; want 料想; 猜想 [anticipate]
余读孔氏书, 想见其本人 among 1-12 at bkrs, so that 让 seems to clarify the meaning as "want"