Someone suggested from another thread in the BitTorrent section that the ranking should be based on: speed, content, pretimes, and rarity (all together).
If that's the case, I think with 2.5 points max for each criteria (speed, content, pretimes, rarity), it would be for:
TL: speed(2), content(2.5), pretimes(2), rarity(.5) = lvl 7 (rounded off)
FTN: speed(2), content(2), pretimes(2.5), rarity(2) = lvl 9 (rounded off)
SCT: speed(2.5), content(2.5), pretimes(2), rarity(1.5) = lvl 9 (rounded off)
This is just a suggestion... What do you guys think?