It's understandable that people be concerned about Story's Coors/road split, but FWIW, I have seen articles with research concluding that once a hitter leaves the Rockies, his home-road splits stabilize some and his overall performance is not as bad as his road splits as a Rockie (Rocky?) would suggest they would be.
Which makes sense to me: as a Rockie, you play half your games in this extreme environment and half outside it. But even more crucially, throughout the season, you will play a string of games in the most extreme environment, then go play a string of games in non-extreme environments, and basically as soon as you figure out how to adjust to that, you're right back home in the extreme environment. But once you move to another team, your home and road environments are likely to be similar or even alike, so you don't have to go through constant back-and-forth adjustments all season long. This specific environmental factor becomes a problem only once you go to Denver as a visitor, and as a Tiger, that'll happen maybe, what, once in six years, tops?
So the Coors Effect, such as it is, shouldn't be a problem at all if we sign him.