And point blank shot only helps ranged attacks. Whats your point?
Not a parity at all. An archer uses his ranged attack far more often than even a specialised wizard uses his school spells. For one, he would be a fool to memorise all his spells from one school (unless he is an enchanter and knows a horde of Lernean Hydras are round the corner...not very likely); for two, he runs out of spells far more quickly than the archer runs out of arrows.
You miss Grog's point. Grog's point is that %-wise, more high CRs creatures have SR than low CR creatures. Thus, his spells are more likely to fail- even with Spell Penetration.
The mathematical analysis is solid-Spell Focus at +2 is mechanically superior to most magical feats.
Show me the analysis. Show me, incidentally, a comparable analysis with Weapon Specialisation in terms of net average offensive effectiveness increase.
Yes, they are. The SF/GSF combo was a must have
Sure. I'm more than willing to concede that GSF was pushing it. What I'm wary of is that SF *in isolation* was broken.
Are there situations where the Wizard PC will target a humanoid who will only save on a 20? Quite a few
Assertion alert! Again, demonstrate clearly where this occurs. I would say relatively rarely- most high level PCs have the nouse the get Cloaks of Resistance, and perhaps burn a feat on a booster for their worst save (it pays).
Maybe it was also a similar reason why the changed haste - everybody took it, nobody took quicken spell. Everybody took Spell focus, nobody Heighten Spell.
No, no one took Heighten Spell because it was lame. If anything, Heighten Spell becomes more useful from SF/GSF, as the DC boosts stack.
Now look at someone with higher Int... as any villain or PC... and you can be sure that the opponent will not have an equally high stat for the relevant save
Probably not (unless it's a cleric with Wis or a rogue with Dex). However, what he can get is a nice item which gives a +5 to saves (relatively cheaply compared to high-level wealth); no such equivalent item exists for DCs. He can get a Luckstone, which boosts saves at a nice cheap price (and checks). He can get a Pale green ioun stone which boosts his saves (and attacks and checks). For less than 10% of his wealth at top-level, he can boost his saves by 7. There is no excuse for any top-level PC having any save value at less than about +15. If anything, my examples are wrong not because they underestimate the impact of SF, but because they underestimate the height of PC saves. The wizard, with his Headband and Tome +5, can, for roughly four times the cost, boost his DCs by 5.
is an even less effective choice for SF, since it is save for half. With save for half spells, against enemies with a 50/50 chance to save (average according to WotC guidelines), net effectiveness is increased by 1/32 by the +1 SF. You've got to look at me straight-faced and say that fighter can do a base 64 damage without WS to obtain effectiveness parity.