Hellcow said:
As for the idea that "minions will explode when cats attack them", this is trying to apply realism to a concept that isn't supposed to be realistic. Yes, minions are defeated when they take damage. This isn't supposed to suggest that they are walking soap bubbles that pop if a 4-year-old pokes them.
See, that's just the impression I get. I'm one of those 'laws of physics' people, and when I see 'Kobold minions die if they take any damage', I immediately wonder how they survived toe-stubbing as a child...
The same creature can have hit points when used against lower-level characters and be treated as a minion at higher levels - because when fighting epic level characters, devils that would slaughter a 1st-level character are now trivial (a principle you see in a range of media - for example, in season seven of Buffy the Vampire Slayer when one turok-han beats the crap out of Buffy, and by the end of the season the gang is slaughtering them in droves).
Or what we called the inverse-ninja rule -- the more ninjas there are, the wussier they are. One ninja is a major threat. A hundred ninjas is an annoyance.
D&D has traditionally modeled this through different mechanics -- giving commoners 1d4 hit points when most weapons do more than that (along with cats). Moving to a purely dramatic system, where a creature has as many hit points as the scene at hand dictates, is a severe paradigm shift. It also implies that a minion may transform into a different creature the instant it becomes important to the plot -- suddenly, the same kobold that would die from a sword stroke has 30 hit points and Cool Special Powers.
This is used in a lot of games -- but is it D&D? I mean, if I wanted to play Feng Shui, I could. (Well, other than the 'no one around here plays anything but D&D' problem...I want to run this cool pulp-era game using Feng Shui, but good luck with that...anyway, I digress...)
First level may be the new third for PCs. This has no impact on the world at large; on the contrary, the commoner IS likely to be a minion, making the PC stand out all the more.
It's a difficult mental shift. It really changes the style of the game; I won't say it's better or worse, but it's *different*. While 3e dramatically changed the rules of D&D over previous editions, 4e dramatically changes the *model* -- and it's easier, IMO, to learn new rules. The idea that Fred the Guard can be mechanically different depending on if the PCs encounter him when they're first level or when they're tenth is...odd, at least to me. Seems like that new-agey 'Forge' indie stuff.
It's pretty near impossible for either the game I'm in or the game I'm running to be converted to 4e with any kind of success, so by the time it's time to start up something new, a year or more from now, we'll have seen all the rules for 4e and will be able to judge it.