Yeah CS it's not a matter of drafting with this in mind, but rather as suggested doing some late season trades or grabbing PlayerX off the waiver wire to fill in for your superstar who's going to be "rested" the last few weeks of the regular season. About all this suggests for the regular draft is beware taking just players from the top teams. Better to have someone who still needs a 100-yard and 2TD game in Week 15 than someone who's going to put on a headset and tell dirty jokes to the QB.
IF you did want to draft with this is mind, however, consider that
the AFC East, for example, is usually quite volatile at the end of the season, with most of the teams clawing for the division title or a wildcard spot. As a result, a guy like Travis Henry should give you good bang for your buck every game, unlike say Ahman Green who may be reclining on the sidelines sipping a Pina Colada during the final few games of the regular season because the Pack has the division sewn up.