It would solve a lot of headaches if they did do that. But also create some more.
It's no secret that the area surrounding Doggie stadium hates them with a passion. So instead of 81 days of traffic headaches, it would result in having 8 days, that makes sense. What has to be resolved would be no tailgating at the stadium. Because part of football is tailgating. The other obstacle that has to be overcome is McCourt. He still does own the parking lots.
A move downtown for the Doggies also makes sense. If they want to build up that area, having 81 days of action is a lot better than 8 days. Now the downside is, I don't know if that area can handle 81 days of traffic. + is, the blue line has a station right at where the stadium will be. So if people use that, it won't be as bad. When there is no game at Staples center, that whole area is a ghosttown. Especially on the weekdays. So this would be a big boost to the area in the summer. Of course the negative is, if you get out of the green zone, you are in trouble. The areas surrounding Staples is getting better, but still not that great.