This post got a little long, so in summary: unless we change our house rule for the Expertise feats, Draconic Spellcaster and its ilk are not going to be worth taking.
I think Wizards' new philosophy is that everyone should have a hit bonus feat. The baseline hit bonus feats are Weapon Expertise, Implement Experise, and presumably the forthcoming Focused Expertise. Then you have a second tier: narrower, more powerful feats like Draconic Spellcaster and Fey Whatever It Was. It wouldn't surprise me to see more in this general vein.
This makes problems for our house rule, though. Consider: Alcinus the Sorcerer takes Implement Expertise: Dagger, while Susannah the Sorceress takes Draconic Spellcaster.
Under Wizards' default system, Alcinus and Susannah are more or less balanced. Alcinus gets a bonus to hit with all sorcerer powers, but Susannah gets a bonus with all implements, and gets bonus damage as well. For these benefits, Alcinus and Susannah each pay one feat.
Under our system, Susannah has to pay a feat, but Alcinus doesn't. Probably she'll skip Draconic Spellcaster altogether.
The only fix I've thought of so far is to offer a free feat in place of the free to-hit bonus. It's pretty inelegant, but it would work.