I see no reason why most of the Japanese bikes, including Bridgestone, will go up much. The demand is slowly shrinking. Newcomers look at a Shimano 600 RB-1 a little less fondly than a 9-sp Ultegra Specialized Allez, and for good reason, if they are the same price.

Current models that will hold value would have to be a good value to begin with. Some late 90's Cannondale and Kestrels come to mind.

As far as holding or even increasing in value, I doubt it. There are a few. A Cinelli Super Corsa, maybe, and some older Paramounts. As information becomes available on certain models, or the enthusiasm of the owners becomes more known, some values increase. Sometimes new information on certain models, especially if it's interesting and tends to promote scarcity, will increase the value of a bike.

Personally, I'd rather have a $3800 new steel SC with 11-sp Campy than a $2500 early 80's model.
But being a C&V guy, I'd rather build as good a bike, or better, for $1000.