Xenonnonex
Hero
Less of a damn nightmare than 3xe.It works, but it's also a mess. CR? A huge gamble. How do you challenge players? It's so swingy and hit-and-miss. Huge hp pools, low ACs. Everyone hitting all the time since hp are the main defensive attribute. Oh, and non-proficient saves against action-denial effects... 0%-5% chance of success.
Go epic and save DCs go even higher, which means your non-proficient saves auto-fail. Attacks hit 95% of the time. Are spellcasters going to be pulling off three 9th-level spells per day? How many 8th-level spells? How do you use CR 10ish creatures as mooks when they have enormous hp pools for "minions" and may possess innate spellcasting or other complex mechanics.
It'd be a bookkeeping nightmare.
Problem is. Wizards has not given high level play really a chance. What could be high level adventures have stopped at around 12 or 15. Not great.
They gave a nod with Mythic. More could be done. And it can be more streamlined.
Which means. High level play should not just be about more numbers. Needs to give more relevance to what epic means.