esmdev
Your 4-selection list is a little too simplistic.
This is a human endeavor. There will ALWAYS be errata. If we are LUCKY, errata will be limited to mostly spelling, grammar and clarifying rules that were worded awkwardly.
By the way, clarifying rules that were worded awkwardly is 90% of what the errata does. Just because it's clear in the designer's mind doesn't mean it will always be clear in the player's mind when he reads it.
System errors are errors that occur with the "game engine" - the "this plus that, modified by the other and compared to some dice"
The game engine needs to be FULLY playtested, highest level to lowest level, no matter what. Gamers, particularly the "weedy munchkin" variety, will tear a game apart once they get their hands on it.
A FAQ with 40 - 60 entries of clarifications, particularly in a 300+ page product, is no big deal. Once you put in a "Yeah, we said that, but it works this way now," you have lost your audience.
Also, not all 300-page RPG books are created equal. When SJ games puts out a 64 page rules supplement, it's 64 pages of rules. With other companies, that's not the case.
Hell, there's one company, I don't want to name names, let's call them Albino Varger, if they publish a rule book, in 10 pages you'll get 3 pages of backstory, 3 pages of really BAD art, 2 pages of game fiction that is even WORSE than the art and 2 pages of actual rules.
In defense of the Trav d20 team, they have gone on record saying the reason for the delays has been playtest reasons. That's a totally valid reason to postpone a release, if you ask me.
But there is NO REASON to not update the Web site. NONE! I'm not saying they feel this way, but it projects that they don't give a damn about their customers. That's bad for business.
And like I said before, if I play games, it's a hobby but if I MAKE games, it's a business.