itachi threw a shuriken at sasuke in sasuke's flashback

i just thought of something that would be really badass.....
if sasuke reaches itachis level at some point and develops the mangekyou sharingan as well, then that would be cool if he uses it to counter itachi's and then both end up in that dimension where both of them can manipulate time, space, and matter....and then a whole elaborate battle could take place in that dimension, while in real life it only lasted for a fraction of a second