There's already SG rebalance planned for a future update, removing the S H L idea is something to be considered, I do enjoy having weapons with 6 in the magazine but that can be easily implemented without the S H L system.
About this being done a long time ago, there was a rebalance a few months back that dropped the LBs damage to 10 from 11, but that still hasn't changed the fact that they're still OP, so changes will be made there too.
