interesting idea. some valid complaints in here that I think can be cleaned up with some simple fixes. First, I'd change the cut off from game 62 to game 41. Why? It should give fans reason to cheer for the team the whole season....who cheers for their team to lose by midseason for draft position, it's a long season anything can happen, 2019 St. Louis Blues for one. Secondly, strength of schedule, if it a thing, should balance out between first and second half of the season. Third, hot starts or hot finishes won't skew the data as much.
One idea that I have that can be tweaked, changed, expanded on, or whatever, is giving teams bonus Silver points for players that they trade. For example, Baseball and Football have a formula for handing out compensatory picks when a team loses a FA and most fans don't complain or even know how it works, so why not devise something to give out bonus points so teams can still be active at the trade deadline to improve for the future while still helping them with draft position.