Some ratings are still based on Oldie's ratings calculator from way back, but most are reworked. "Adjusting" across different seasons is based on the following links:
https://forums.hfboards.com/threads...ing-averages-and-standard-deviations.2889811/
With regard to franchises moving, in this roster I've decided to select historical players based on the cities/states in which they played rather than the franchises with which they were signed. Does Ilya Kovalchuk mean anything to the current Winnipeg Jets (former Atlanta Thrashers)? (To use a real-life example, in the 2016 Heritage Classic Alumni Game between Edmonton and Winnipeg, the "Winnipeg Jets/Atlanta Thrashers" invited Teemu Selanne, Dale Hawerchuk, etc.)