We also have sparkles!

One of the best things about SWTOR (in my opinion) is the class and companion storyline. I would love to be able to re-play these questlines on my level 50 characters without having to re-roll and do all the planet quests again. Perhaps explore different dialog choices, etc. Are there any plans to implement such a feature? Say, for example, as a Legacy reward?

I fully support the ability to re-play class and companion quests. I would love to see the Sith Warrior story again in this manner, to try out different conversation options, etc. Maybe this could be put in as a Legacy feature. If they were worried about people farming these quests for companion affection, LS/DS points, etc., they could just make it so none of these are rewarded the second time through (or just drastically reduce the number of points you get). Personally I wouldn't even care if they introduced this with no level scaling at all. However, I could see this as a feature where either the quest and mob levels scale to 50, or maybe even introduce a mechanism where your level goes back down to the appropriate one for the quest (although either of these options may take too much to implement, I'm not sure). For the whole companion issue, they already have a mechanism in place to make certain companions 'unavailable' for a time. I think this mechanism would work for replaying class quests. In the trooper story: Maybe what they could do is have all companions that are from later on in the story as "unavailable" while you are working on quests that happen before you acquire them. It would absolutely make my day if they introduced this feature to the game.