I have some other opinions which might seem crazy.

• I don’t think unified task systems are that important at all. Players of reasonable intelligence can flow with doing one thing for this and another for that. It depends on the Ref’s ability
• I think the best thing you can do for your campaign is read a lot of science fiction
• I think a small group of players - like 3 - who can show up every time for games for 10 years (GASP!) is the best number of players
• I think Classic Traveller can be used as-is and the game can be just as enjoyable as any other system
• Mongoose Traveller, both 1e and 2e - the core systems - are also really good
• People who want to change everything about Classic Traveller (this is not an insult) should play GURPS Space, which is a totally flexible toolbox and, again, easy for players of reasonable intelligence and motivation to grok