The problem with the strategy is that it won't change the results in a favorable election (if Missouri is potentially competitive, Hillary Clinton probably wins) but that it might be a waste of resources in a tough election. If it's 2016 and the election is close, the resources used in Georgia could have just as well been used in Virginia or Colorado.
There is an element of diminishing returns, and it's possible that the Clinton campaign will have so much money it doesn't matter how they spend it.
It might not flip a state but it could flip a Congressional district. If the Democrats want to have an effective Presidency, they have to do better in Congress. We don't know where these fifty state offices will be located, but I doubt Louie Gohmert's district will be where the Texas office is. Getting Democrat voters whose votes don't really matter for the EC "Ready for Hillary" could flip seats.
Besides, resources aren't really finite anymore. Both the Democrats and Republicans have enough money to fill every TV commercial spot in all fifty states. They could run SuperBowl Ads if they wanted. I'd like to think the GOP nominee will respond with their own fifty state strategy.
As you said, Clinton campaign will have so much money it doesn't matter. And again, the GOP nominee likely won't be settled until April 2016. She's already in the bag in April 2015. She needs to use this year time advantage to build a general election organization.