At my house, they vary the lineage with the length of the season. 30 weeks, it's X, and for every two weeks we add, knock off $0.25. I'd just as soon bowl 48 weeks a year anyway, so a 36-week season doesn't bother me at all.
Last season, we nearly added two more teams to the roster and the secretary wanted to bump us from 30 weeks to 34 weeks so that we could still bowl everyone twice plus four position rounds. Between the drop in lineage and the increase in teams, that was about 50% more prize money for the four extra weeks bowling. Unfortunately the two teams never showed up.
SH