Yes, we know that, no-one's saying that they should. It isn't a bug in vanilla, it isn't a bug in RedPower, it's just a shortcoming that no-one can do anything about, either ou live with the fact that microblocks are translucent, or hope that Eloraam or Immibis write their own replacement lighting engine which I think is... actually I wouldn't be entirely surprised if Eloraam did that, given the awesome stuff she's already done including her Minia project, but I wouldn't hold my breath.