Posted this idea elsewhere, but I don't know how much overlap there is in audiences of the two topics.
Eliminate all OL positions except for LT. The rest are bots (ideally, customizable by GMs or something along those lines). This way, you take the need down from 40 (or 70 with DSFL) to 8 (or 14). There's a much better chance of finding 14 people who want to play OL than 40, and I don't think it would force an unreasonable number of players to play the position if they don't want to.
Eliminate all OL positions except for LT. The rest are bots (ideally, customizable by GMs or something along those lines). This way, you take the need down from 40 (or 70 with DSFL) to 8 (or 14). There's a much better chance of finding 14 people who want to play OL than 40, and I don't think it would force an unreasonable number of players to play the position if they don't want to.