I've thought this through.
If we don't reset stats. Good newcomer players will have more chance than others especially when they beat high ranked players. That was one of the fights earlier.
To solve that, I can code some filter to do not let that happen. But now each season for entering PO, the high ranked player have to play more and its harder for him to get into the playoffs, why?
For example if he play vs his same level players, he would gain the standard points (40), in the meantime if newbie in the league will play with another newbie and he gain 40 too and that's not fair.
To solve this problem, we can give the high ranked player some advantage. Like in all seasons first 4 top players in the stats goes to the PO if they play their 30 games in that league. So we collect other 4 people by the 4 top players in that season. Probably 8 players will be few for this matter. Then maybe PO must be 16.
If we go this way, There's only one problem.
How much the league is active to do such thing?