Aha, found it! This blog has a handy table assuming a 65% success rate at a given level.
https://songoftheblade.wordpress.com/2017/06/01/rationalized-skill-check-dcs-for-5th-edition-dd/
Yes, I know that. I'm assuming that somebody on the internet has done the math for me and put together what DCs are easy for a party of X level though.
Sure this is a really obvious question. Is there a table somewhere which shows appropriate ability check DCs by level or by adventuring tier? I'm sure htere is and I'm just blanking on it.
The 'adepts' thing is so problematic and gatekeepy. Why would I sell in that marketplace when I know that the marketplace owner is going to consistently promote my direct competitors?
Speaking as somebody from the other end of that line (different industry), the "why did you leave?" comments is the "call us abusive names" line. Even when people aren't being abusive, they're often really rude. Generally we ignore it.
Group checks in D&D are in the core rules. More than half the party needs to succeed.
The A5E people said it was if everyone succeeded or everybody failed for critical success and fail on group checks.
Characters with double the ability modifiers they had before are not compatible with all the monsters and DCs in the rest of the game. You'd have to rewrite everything, and bounded accuracy has now gone out the window.