EzekielRaiden
Follower of the Way
The price we paid for that tight budget was a decrease in the meaningful variation of options and a system that resisted dramatic swings in fate. Given the amount of complaints about 4e's "sameness" and its "draggy combat," it's pretty safe to say that not everyone was on board with paying that price.
Personally, I think CR does a fine job, because I expect my D&D combats to sometimes be wildly swingy. Sometimes the party cleric will roll good on turn undead and turn the zombie fight into a cakewalk, and that's fine, because it lets them be awesome for a moment. Sometimes, they'll roll low and save-or-suck effects will lead to the wizard's untimely demise. That's fine, because it makes the risk of failure very real. Greater precision in 4e didn't lead to a more fun game for me - in fact, I pursued measures fairly early on that restored the swinginess to the system for my own games.
My point was not that it works absolutely perfectly for all possible styles of play. I was responding to someone who asserted that the nature of D&D as a game made it utterly impossible to have a system with any "consistency." 4e proves it is at least possible to have a consistent system.
I'd also argue that there is a difference between "variation of options," which I at least believe 4e had in spades, and "unpredictability of outcome," which I completely agree 4e actively fought against. If you want a system that will occasionally surprise you, the DM, as to how the encounter should work? You don't want 4e's budget system. You want something that is precisely like 5e's CR--that is, unreliable. It does not reliably tell you the encounter strength; the strength it tells you may be spot on, or may be radically different, and there's little way to know for sure which it will be in any given situation. It gives you a rough estimate, which may or may not actually pan out. Admittedly, the designers took at least some effort to consider important secondary effects, e.g. relative numbers and who has the more favorable terrain, I just don't feel it's enough.
Or, another way to put it: It is easy to ignore a reliable system if you want to be surprised. It is hard to achieve reliable results by tweaking an unreliable system.
Note, though, that "unreliable" should not be taken to mean totally useless. The CR system is not at all useless. It's just very squishy, and sensitive to more factors than I think it has to be sensitive to.