I think the "classic" traveller setting would be a little hard to get through to a wide modern audience. Think about it. Look at all the star trek and star wars movies, you have instant galaxy wide communications. Not so in traveller. Hard to deal with characters and events happening in different locations without that.
Also, travel is a lot quicker in those settings. In traveller, it takes a week to make a jump from one system to another. you can't change course, you can't get messages during transit, you're locked in a box for a week. How exciting is that to film? not very, unless your'e doing a horror story. If you acknowledge the travel time in the script, will the audience wonder what happened to the heroes during that week?
Babylon 5 sort of pulled it off, but even they had communications from planet to planet through the "hyper channel" or some such.