Retroactively though it helps the case for turning Leia into 'the Other' that she could receive the message with ease.

One of the other lost opportunities is not having Lando die so that the cynical Han actually possesses latent use of The Force he claims to have seen no evidence of in ANH by correctly predicting the destruction of The Falcon.

A clever writer could have turned blind Solo's dispatching of Fett into a reversal of the training scene in the first film.

Instead (like little Annie in TPM) it was just a silly accident.