I think you have to fiddle with the points system a bit, no doubt about it.
If you did something like 5 points for a win, 2 for a draw, 1 for a goal then it might do the trick. I get the feeling you'd have to test it for a season somewhere to ascertain what the actual effect would be. Using a system like that would mean you'd get more points for a 4-3 loss than a 0-0 draw, which doesn't really sit well but I can't think of anything other than giving points for goals.
Unless you award a UEFA cup spot based on positive play or something, but it seems a bit naff.