So, I was looking at the thread to see if anything new was posted, and something occurred to me...

Quote Originally Posted by Elves View Post
Under this interpretation, the "leapfrog" combo still wouldn't work because EGW+DW don't give you the necessary spell slots (and there's still the CL issue). Under this interpretation, you could use EGW to double the slot gained through the Faustian pact.
Absolutely not, and you are only thinking that because, like many people, you are thinking that EGW says something like "you get an extra spell slot equal to your highest level spell slot". But it doesn't say that.
Quote Originally Posted by Races of the Wild
Generalist Wizardry: A 1st-level elf wizard begins play
with one extra 1st-level spell in her spellbook. At each new
wizard level, she gains one extra spell of any spell level that
she can cast. This represents the additional elven insight and
experience with arcane magic.
The elf wizard may also prepare one additional spell of
her highest spell level each day. Unlike the specialist wizard
ability, this spell may be of any school.
This substitution feature replaces the standard wizard’s
ability to specialize in a school of magic.
Much like how the italicized portion came up with regards to the EGW "slot" not "floating", the bolded portion means that until you know and can cast a L9 spell, your extra spell prepared in the morning cannot be a L9 spell.

Again, a level 1 EGW with Precocious Apprentice prepares an extra L2 spell (which must be a second iteration of the spell chosen with the feat). That's the only way to get the EGW bonus higher than L1 at 1st level.

Quote Originally Posted by Doctor Awkward View Post
This is one of those theoretical fuzzy areas that usually doesn't fly at tables.

By the Rules As Written. There is nothing wrong with this.

The spells have no limitations on which feats the character may give up in exchange for Abyssal heritor feats. Feats provided by you race are functionally identical in all respects to ordinary feats, and for all rules purposes are treated as such unless they explicitly say otherwise.

The intention of the feats is in no way clear. It's entirely possibly (and very likely) that the designers never even considered racial feats when they wrote those spells. And it is "gaming the system" in every sense of the term, both in the sense of abstract character statistics and tinkering with the forces of chaos and evil for personal gain.

But this trick is explicitly permitted by the Rules As Written, and the Fiendish Codex is hardly an obscure resource. I personally allow the spells when I run games, but make certain the players are aware of the consequences of their actions and that evil outsiders take note when either of these spells are cast.
I'm actually baffled by your acceptance of this, given your opposition to Elves and myself earlier. Unless you have realized you made a mistake before and now recognize that were are correct about Alacritous Cogitation and Versatile Spellcaster . Because it's the same kind of lens that one looks through to see this trick.

Both are perfectly acceptable, given a literal reading of the RAW, but are almost certainly a violation of the RAI, at least it seems that way.

Because that means that AC gives a wizard the prerequisite "ability to spontaneously cast spells" for VS*. And VS does not hinge on language like "one of your spells known" or "spell from your Spells Known List". It says "a spell that you know", using the same text that AC (which is explicitly a wizard feat) uses. So, for example, a Level 6 wizard who has AC and VS may expend 2 L2 spell slots to cast any L3 or lower spell that is in her spellbook.

Is that overpowered? I would say yes. And at my table, I would probably not allow it. But I acknowledge that such is an exercise of my right as a DM to prohibit things at my table.

*And remember, even using the RC quote that you provided, spontaneous spellcasting does not say "must not be able to prepare spells" but rather "has a daily allotment of spells that can be cast without preparation". And Alacritous Cogitation gives a wizard such a daily allotment -of one spell.

Now, if you have recognized that you were mistaken, please say so. I would be happy to drop the matter.