I suppose I would like to see more discussion of the planning and preparation of an oracle opening.
That is to say, in my mind the right frame of reference for discussing Oracle, and the tech you intend to harvest, is the start of the research climb to Priesthood, and the projected position if you win the race, rather than looking at the end. What are the telltails to watch as you make the decision.
I think they fall into two categories. One collection (alluded to several times, but I think they should be gathered into a convenient section) is the utility of the main research line (Myst-Wildcard-Priesthood) given the local circumstances - are there religions near by to make Temples useful? Do we have militant neighbors? Are we near land hogs? How soon can we trade the tech? Do we have the pieces to leverage the wildcard tech (Meditation needs religions, or gold for Aesthetics->Shadowan, or an early attack on Philo; Poly wants marble/early Literature). Do the GP points fit with our long term prospects.
The second collection would be more tied to the technology you hope to grab, and the prerequisites. So for Metal Casting, we'd be talking about the utility of forges (luxury metals near by), the possibility of the colossus, the implications of the pottery (therefore Wheel) requirement.
Other than the other "must be prioritized to get" wonder, stonehenge, the oracle is the lowest hammer-sink early wonder, and the returns are pretty good. So when does one go for it? I look at a few things:
1. How strong is the commerce around the capitol. Do I have a river? Seafood? gold/gems/silver? These things make oracle more realistic.
2. Is the BTS forest bug in play? If so we'll want BW. If not, we can actually delay BW (!), going worker techs for the special tiles, mining, then straight to priesthood. Doing this allows one to oracle code of laws around 1800-1600 BC (you can still get a 2nd city out first usually) ---> if you're not on deity, you're very likely to succeed.
3. Now, are we losing land to this? Well, if you meet someone on turn 3-5, it's probably a good bet that you want something other than oracle, or might not want to delay BW (or our rush). City capture gold can allow an oracle-like tech jump anyway

.
If you get BFC horses after researching AH for livestock, no oracle if you meet someone other than maya. You get to pretend you're persia

. I've double-rushed (mehmed and cyrus, not super strong or weak targets) with stock chariots on immortal that way, and both had metal...or would have had metal anyway.
Obviously stone makes Gwall and mids more attractive, too. If you have marble aesthetics doesn't seem like a bad draw from oracle since you can get a very early great library/national epic going.