What you're proposing defeats the entire idea of Runes Reforged. The idea is to have many different kinds of Runes a potential champion could take into different matchups, not one specific rune made for a certain champion type. You're supposed to be able to customize your character depending on your play-style and matchup, and what you have proposed will bring us right back to the old Runes, where there was really only a single viable way to build any one champion.
Giving a Bruiser-specific keystone would mean that there is a bland default keystone specific for bruisers, and that there will be no real reason to use any other one save exceptional circumstances. This is exactly the same as Runes and masteries were before. It is highly important that Runes are not specified, and that multiple kinds of Champion-types can share the same Rune.
What they're doing sounds fine, but neither of us have seen the thing yet so you're drawing conclusions from thin air. You haven't seen it yet. No information has been released about what it does yet. You know nothing about what the Rune does yet. Let's wait and see before making threads complaining at Riot for something you have no clue of, and that your understanding of is misguided of to begin with.
