@Skimpp For your point 3 (Non ranked Overall skill rating SBMM),
1. I think it is good to have Total number of 20-kill badges owned and Total number of 4k damage badges owned to be the most weighted parameters as this will overshoot the smurf skill rating to people better than them (for example, silver players with many 20-kill badge will be matched against multi season predators in pubs).
2. Lifetime Win rate and Lifetime Top 5 rate should not be one of the parameters as smurf will usually intentionally rank down/grief games to get subsequent easy lobbies
3. KDR over last 50 matches and Average damage over last 50 matches should be considered as an important parameters to improve engagement, however, an algorithm to detect potential intentional griefing games to get easy lobbies should exist to prevent this
So I think it would be better to be
Total number of 20-kill badges owned > Total number of 4k damage badges owned > Lifetime highest kills > Lifetime highest damage dealt > Lifetime KDR > Lifetime average damage dealt > KDR over last 50 matches > Average damage over last 50 matches > Legend total kills > Legend total damages
