It's a fine patch, you just don't like the feel of it - which is fine btw, but how much you appreciate the feel of it doesn't change the effectiveness. The feat specifically addresses a key complaint about the Sorcerer class relating to spell knowledge and utility casting (which you agree is true). The fact that other classes can take it doesn't make any difference though, and that Champion doesn't cast other spells, so to say his utility is on par with the Wizard's is disingenuous.
If you specifically don't want to include feats that's certainly one way to talk about the issue, but in general the talk on this site about builds assumes access to feats, which makes feats a reasonable thing to come up in a conversation of the type we're having.
I'll add only the Sorcerer can apply metamagic to those rituals, so Sorcerer get more out of the feat then others.