It would actually be technologically feasible to do a projection disk that takes into account the changes of in-season play would have on an overall projection. David Appelman at FanGraphs has it set up to do ZiPS In-Season Projections, so technically, if you have a minor league translation engine installed and players mapped by DMB ID, you could design, at least for the web version of DMB, a method that changes the event tables very slightly every day.