doctorbadwolf
Heretic of The Seventh Circle
Well, I'm not sure what would be special about a 'toned down' Epic, it would be "just a tedious amount more levels of paragon" IMHO.
However, the idea of EDs as an optional "over the top" mode of play for a game that OTHERWISE has just paragon, that makes sense. So PPs basically deliver all their goods by level 16, and then OPTIONALLY 17-20 could include an ED (obviously you'd have to tweak the mechanics a bit, but it would work). HoML could do something like this, as it already labels 17-20 as 'Epic'.
IMO, 30 levels of regular progression is strictly better than 20 levels.
If we drop down to 20, I'd say shorten themes to a lvl 1,3 and 5 feature, or combine them with paragon paths. But ideally, I want Epic to be a layer you can apply to the game optionally that doesn't replace anything. A purely additive layer that ramps the whole game up, including epic templates for each monster role/type, rules for epic hazards and challenges, etc.
I want to be able to play a group of Demi-gods, chosen, and destined Heroes straight from level 1, and I feel like 4e is 90% of the way to allowing that with an optional layer.
A while ago I took a look at the EDs for this purpose, and I think that you could just literally put them on top of the game at any level and they accomplish the goal.