closing the gap with the sorcerer

[taltamir]

What are some of the best way for a sorcerer to close the gap between them and a wizard?

I noticed that on the PHB2 p61 there is an alternate class feature where a sorcerer swaps his ability to take a familiar with the "metamagic specialist", which makes his metamagic take normal amount of time to cast (and; more importantly, allows him to use quicken)
And if you really miss your familiar, you can always take one using a single feat.

What are some of the other ways to eliminate the advantages of a wizard over a sorcerer? (aside from asking your DM to houserule it of course :P)

Specifically, the biggest issues I see are:
1. Metamagic - no quicken, metamagic takes longer to cast.
SOLVED: Metamagic Specialist solves this one.
2. Spells known - you know very few, you can only swap a few on levelup.
SOLVED: Arcane Disciple (spell domain) mostly solves this one.
3. Spell Progression - you are a level behind on max spell level.
4. Spells per Day - focused specialist means the wizard actually has MORE spells per day than you of max spell level, although with lower level spells you both have 6+stat spells per day.

Please cite the source (if you can) of the solution to each of those problems.