ruleslawyer said:I don't see how per-encounter design fails at mitigating the "five minutes a day of adventuring time" problem.
I think it's clearly a consequence of the reasoning that Celebrim has outlined. IF all you have are "per day", "per encounter", and "at will" abilities, then what does a challenging encounter look like in DnD? It doesn't look like an encounter that requires nothing but "at will" abilities because those are of no consequence to use. Think of those encounters in 3E right now that require only "at will" abilities from characters and have no effect on daily resources. Those encounters are insignificant.
So in 4E, just like in 3E, only encounters that tap daily resources will be considered significant (as will those that pose an immediate risk of death/dismemberment - where dismemberment can be considered a kind of "daily resource" cost.) Those types of encounters have a consequence that affects the rest of the adventure. Therefore, daily resources (that 80% level) will probably quickly evolve into the threshold for resting.
SO - if a single encounter uses the daily resources of the party, then it probably was exciting. But then the PCs are likely to rest. If it doesn't use the daily resources, then it's probably insignificant.
Thus, AFAICT the "per-encounter" logically fails to mitigate the thing it's trying to solve. The thing AFAICT that the "per-encounter" folks seem to be missing is that DnD already has "per-encounter" abilities for the character classes and that just simply causes the expectations to be revised.