My favorite option, I think, wasn't listed. I only read about this recently, and I think I like it.
For the past couple years, many coaches have advocated getting rid of the one-point conversion altogether, making a touchdown worth 7 points automatically. 1256 out of 1261 attempts were good last year, or maybe the year before. Why waste the time and the potential for injuries?
Many of these coaches, including Billacheat, argue that you can still have an attempt to get the ball into the end zone. If you succeed, one extra point. If you fail, you lose a point, essentially making it the same scoring as now, but without the stupid automatic kick attempt. I favor this option, as I like the drama it can lead to.
My Seahawks rarely let the other team close enough for it to matter, though.