Cadfan said:There is apparently more than one method by which a character of one class can obtain an ability normally available only to another class. One way is through feats. Another is to use another class as a replacement for a paragon path.
This.
Also, on the topic of Rituals, I can already sniff out one more houserule coming: "you can't buy rituals". They'd have to be researched and the vast majority (and likely all the truly powerful ones) would function like a scroll -- one cast and gone.
I don't like the idea of being able to go down to "Ye Olde Shoppe of Scrolls" to buy a book of Raise Dead.
Unless, of course, that book was written by Abdul Alhazred.