(1)Why does Archmage III require a Greater Spell Focus feat, when it gives you access to the Secondary Spell Mastery enhancement (which requires a SECOND normal Spell Focus feat). Archmage IV gives you access to the Spell Mastery II enhancement, so I believe that is where the Greater Spell Focus Feat requirement should be... If someone wants to dabble in both necromancy and enchantment, he/she is forced to get a Greater Spell Focus in one of them first...
(2) Does Maximize and Empower work on Arcane Bolt? (and Arcane Blast?)... The bolt spell was doing around 80-110 points of non-crit damage per shot (Level 15 wizard)... 15d6 (assuming 1d3+3 = 4.5 average) = 70 or so... Looks like Empower is working, but not Maximize? The weirdest part was I got the same damage numbers with the metas off as I did with them on... Yes, it's very very nice that the spell only costs 1 point, but 100 points of damage is only enough to **** a bad guy off... (I did have some luck using my 1 point Hypnotize spell, then kiting around each monster one-by-one using the Arcane Bolt, but boy that's slow - might as well just use firewall). It WILL be useful to finish guys off when your fireball leaves them with a sliver... so it will still be nice to have, but I sure wish Maximize worked on it.
(3) This PrE is HUGELY feat hungry... One of the nice things about being a wizard is all the extra feats.... This PrE requires so many that you lose the flexibility of being a wizard... Please think about removing Mental Toughness... That's a feat an Archmage doesn't need, what with all the extra SP you get anyway from the PrE.