Spell Focus helps all your evocation, and as a crossblooded Sorcerer, let's be honest, you're going to have a lot of evocation. Spell Specialization means a lot more for a Sorcerer as you're going to need that CL for penetrating SR and dealing 11 extra damage average on your d6 per CL aoe spells.
Remember, my point is not that sorcerers are better than wizards in general, just that they can function at the same level for helping the party (I can cast haste and dispel and glitterdust, and that is 95% of what my party needs from me) And they have different things they can do better than the wizard. They are better blasters. Having a blaster is not necessary, but can be a fun role to play, and you can still function as good enough. You won't be as good as a Wizard overall, but not all spellcasters from fiction should be intelligent researchers of Arcana. Some of them should be troubled youth granted powers beyond their control. Or whatever else you can fluff a sorcerer into as opposed to a wizard.
Remember, my point is not that sorcerers are better than wizards in general, just that they can function at the same level for helping the party (I can cast haste and dispel and glitterdust, and that is 95% of what my party needs from me) And they have different things they can do better than the wizard. They are better blasters. Having a blaster is not necessary, but can be a fun role to play, and you can still function as good enough. You won't be as good as a Wizard overall, but not all spellcasters from fiction should be intelligent researchers of Arcana. Some of them should be troubled youth granted powers beyond their control. Or whatever else you can fluff a sorcerer into as opposed to a wizard.