[TheCrimsomBlade]

you can play Tribunal two ways;
1). Do main quest only and blast through in about 24 to 30 hrs.

2). role play game and do all quests (Side & Main) 80 to 120 hrs without cheating.

it all depends on weather you like to "LIVE" the quests in morrowind and Tribunal as a character or race through it like Diablo just looking for treasure.
You can play through it fast and start something new when your done or try to Role play and enjoy the tasks of questing and discovery,its up to you and both ways are OK as long as you get your moneys worth out of it.
I Role play and take my time and try to live the game and have a great time with it, But the Idea is to have fun, so make of it what you want and go play something else when your done.

Two years from now I'll still be playing Morrowind and its MODs and expansions just like I still play Baldurs Gate and its MODs and Expansions as well as a number of other CRPGs.
I look at it like this - if I going to spend $40.00 to $100.00 on a game and its expansions I'm going to get every pennys worth out of it and then some, and after I play a game I come here and help other people that need the help or have questions about it and that's fun too.