With so much changing week-to-week and even day-to-day in the NFL, and so much minutiae involved in Rest-of-Season (ROS) rankings (injuries, matchups, BYE weeks, team situation, etc.), a full on projection approach would be extremely difficult if not impossible to nail. There is a high likelihood that even the most rigorous forecasting model would end up with a less accurate result using a week-to-week ROS projection approach. Precision in this matter is really not possible.
We do publish general ROS Rankings every Tuesday and our customizable Player Trade Evaluator tool. These are intended to be used as guides when analyzing player value for trades, waiver claims, etc. In some situations, players may gain or lose value depending on your specific rules, PPR vs. STD etc. But in general, the ROS rankings represent our opinion on player value moving forward. They are largely open to interpretation and should be used as a guide while taking into account your team needs and specific situation.