The Crimson Binome
Hero
I'm not really sure what to make of that. If you think they've done a good job of keeping everything balanced so far, such that core+1 would be a superfluous restriction, then you and I have vastly different standards for balance.I disagree, have you read anything on balancing games exponentially?, I have, and I know that it isn't unreasonable to ask WotC to attempt to balance all options available.
But that isn't relevant, what is relevant is that balancing 5e is something WotC is equipped to do, and i think they've done well so far.