First, let me say that I have never taken an intentional draw in a game. I have been in a game where a friend conceded to me at Gencon (Sam Tham) in the final round of swiss, and that concession resulted in me moving to single elimination and Sam sitting out (which he knew would happen before he conceded). Was that unsportsmanlike because we didn't actually play the game?
I can't say I would never take an intentional draw, but so far, my pride just doesn't let me do it. All that being said, I feel people are making up their own definition of "unsportsmanlike". More than a few have let personal emotions and feelings dictate how they look at that term.
I hate to be "that guy" that brings actual definitions of words to an arguments, but here goes...(from one of the many online dictionaries)
unsportsmanlike - violating accepted standards or rules
Those of you that keep calling the taking of an intentional draw unsportsmanlike, I think you should change the adjective you use. If you want to say it is distasteful to you? Fine. It violates your own spirit of tournament competition? Fine. But unsportsmanlike? Uhh, I don't think so.
I completely agree with Finite that many of us come to win a tournament. I know I do. And if the rules allow for draws, then there is nothing unsportsmanlike in taking the draw.
Now, I am really intrigued by Fatmouse's proposal. It has been a long time since Game of Thrones allowed winners and losers in a game where someone did not meet their victory condition, but it has been done (pre-Valyrian I think). And anyone who has run a tournament knows that ties muck up the swiss rounds.