This will replace draft round subbing. If you are missing an Advanced, you can sub anyone. Missing Silver, you can sub Silver and lower. Etc. It will also be what we use for determining Summer Freeze team parity. Potentially limiting the amount of Advanced players per team in B and Intermediate in C.
There are new levels which can be found at the link provided below. Same basic premise, players divided into skill levels for the purposes of substitution and draft.