Hi, i usually post at the bioware forums but since it's more or less known that Obsidian is working on KotOR: Sith Lords i thought that i could register here as well
My suggestion is about how you could connect the stories between the games in a more or less discrete way:
In the beginning of the game someone recognizes you as one of Revan's former followers and you're brought up for a hearing about it. At first, they give you a datapad with diffirent pictures of Revan, containing all the selectable characters, male and female from KotOR1, from where you can identify one as Revan. After that, they'll ask about what happened to him after the Star Forge, where you can select from DS/LS ending, who survived and so on...
In this case everyone ends up happy Ofcourse, this means a bit more of work for the devs on who makes a cameo appearance, the Revan/Bastila relationship and so on, but it should give the player a some sort of better connection between the games atleast.
(sorry for the spelling mistakes in the topic)