It starts with reigning in the bonuses. I'm not a fan of expertise doubling your proficiency modifier, for example. I also adjust most of the DCs up by 5 points from what's been published.
We have three levels of proficiency that is consistent across all types of proficiency (skills, attacks, saves, etc.), although there are a number of things (weapons for example) that expertise is currently not available. I'm still considering what the impact of that would be.
Non-proficient: +/- ability modifier with disadvantage
Proficient: +proficiency modifier +/- ability modifier
Expertise: +proficiency modifier +/- ability modifier with advantage
Does that mean you roll with disadvantage if you are not proficient in a saving throw? That seems like a pretty big impact on balance when non proficient characters try to dodge AoE damage for example.We've also considered (and are very close to doing so), granting everybody proficiency in Perception and/or removing it as a skill.
Also, why did you up the DCs by 5 points?
Say some character is not proficient in persuasion. Rolling with disadvantage means that character could only succeed at a very easy task like persuading a child to eat some candy (normally DC5, now DC10) with a chance of about 30%.
What is your reasoning behind removing perception as a skill?
Have you figured out how to handle weapon expertise yet?
Thanks for considering my questions. I like the idea of your approach, that's why I am asking.