It amazes me that people consider sacrificing next season on the hope that this Bills team could beat a team like the Colts. I argue if they keep playing Holcomb this year then they are basically sacrificing the next two years just to give false hope to people like yourself.
Frankly, I don't think the Bills are a playoff team with either JP or Holcomb this year. The only way they'll make the playoffs is by default. Everyone else in the AFC East sucks just enough to provide hope. They certianly won't get a wildcard either.
So you're right, lets sacrifice this year with hope and next year with development. Then if JP doesn't pan out by the end of the 3rd year then they'll only be one year behind now with the prospect of another rookie QB to be groomed.