You use the terms logical, unbiased, and methodical.
Methodical, yes.
I do think your system is biased toward premier play. Some talented freshmen do not wish to play premier with their age group because it interferes with high school play.
It is not logical. A girl maybe highly talented, yet choose to take a year off from club thus receiving less points than a classic/recreation league player. It does not take into effect the possibility of being a former premier or even challenge player. Therefore a player who played on an 0-19 classic team and never played in a varsity match would warrant the same numerical importance of a player who previously played premier and started on varsity, yet took the club season off.
PLEASE, do not take my comments as unappreciative of your efforts. I simply go on record as saying it is very well impossible to make objective and definitive assessments out of subjective compilations such as high school soccer teams.
If your initial description of the evaluation methodology limited it's terms and intentions to a general, evaluation of subjective material that takes out the human element of favoritism - then it would address many of the shortcomings of which it previously claimed to not exist.
As long as it does not claim to show no bias to any parties or be free of all logical mishaps - we're ok. But if it does, then we have a problem for the very nature of what we're evaluating cannot be mathematically and accurately assessed without flaw.