Now that we are going to be seeing a lot more of it, I think we should look at Expertise.
I think 'double proficiency' is too strong. It throws the 'bounded accuracy' of skills right out. The Alexandrian goes into it in more detail here;
thealexandrian.net
I think it would be better if it was just a flat +2 to those skill checks on top of other mods. Expert classes would still be really good at their skills because they most likely align with their ever increasing attributes, but they wouldn't be game breaking good.
What do you think? Is this an issue for anyone else?
I think 'double proficiency' is too strong. It throws the 'bounded accuracy' of skills right out. The Alexandrian goes into it in more detail here;

1D&D: The 5E Skill System Is Bad
One of the most talked about changes in the One D&D playtest is the decision to make all natural 1’s auto-failures and all natural 20’s auto-successes.My first gut reaction to this was:
I think it would be better if it was just a flat +2 to those skill checks on top of other mods. Expert classes would still be really good at their skills because they most likely align with their ever increasing attributes, but they wouldn't be game breaking good.
What do you think? Is this an issue for anyone else?