I don't like it if I queue for a random dungeon and (as healer) get more often than not a half done instance, or people stuck on the last boss etc.
Is there some logic to this I don't understand?
I think when I get invited for an instance, if it's already begun; as in one boss or more are already done, I should be allowed to decline.
If I'm tripping, feel free to let me know. To be fair, I haven't used the finder all that much and I just do it to go do a dungeon - but I don't like getting stuck on a run on final boss with 2 dds and no tank or healer, etc.
Then, if I leave when I see the situation, I get a penalty.