I suppose it could be done but I can't see the point myself.

I could see some point in taking some of the Jedi deaths and adding them to a montage of future events sequence near the end.

In which case fully masked Vader could shoot him down in an earlier version of his TIE Fighter thus showing Vader hunt down and destroy the remaining Jedi Knights but over a longer time period.

Fett is a bounty hunter but I think Lucas made the mistake of turning him and his 'father' into general hired muscle.

The Empire might use him for tracking but not really for the kill.