My thoughts on a supplemental draft.
We would conduct it much like the Rule V draft is run. 15 teams, in order from worst to first. Each team either takes a player or passes. After Round 1 is completed, we repeat the process thru subsequent rounds until we reach a point where no team makes a pick in any given round.
Thoughts:
In lieu of going worst to first based strictly on order of finish in 2017, we could do the last two seasons, if that was considered to be more fair.
The point of the supplemental is simple: to build up the lesser teams in the league, making the league more balanced and keeping more owners vested over a longer portion of the season (which has been a problem for quite a while now). The gap between the top teams in the league and the bottom teams in the league is wide enough that no one player will come close to making a dent in the deficit. Truthfully, no two players would, either. The way our league is constructed, team rebuilds can take a number of years to bear fruit, and only with quite a bit of luck.