Who could have played Tubelight's Laxman Bisht's character better?

Now it's a known fact that Salman Khan was laughter invoking as a specially abled person Laxman Bisht in Tubelight.

We have seen in the past various grown up actors or actresses playing specially abled person starting from Hrithik Roshan in KMG to Shah Rukh Khan in MNIK to Priyanka Chopra in Barfi! to Aamir Khan in Dhoom.

In my opinion Priyanka Chopra nailed the role as Jhilmil in Barfi.

Shah Rukh Khan, I think, was okayish in his role in MNIK.

Hrithik's character has been iconic since KMG days and been very famous despite of his overdoing.

I better not waste my words for Aamir's character in Dhoom.

But what do you think? Who would have played Laxman Bisht's character better in Tubelight?

Who would have make it believable?

Aamir's character in Dhoom and Laxman's character are not similar. Laxman seems to have more emotional connect to the character which Salman failed to bring out. So who could have done it?