She can't regenerate anymore. She's a very loved character so no, recasting her would not be a good idea. Dropping her would also not be a good idea. Who cares what she looks like!! It's a Science Fiction show!

I don't understand why everybody can't wrap their head around this! Even though River "dies" in Forest of the dead. That doesn't mean anything! She's a time traveler. When she meets 10, she could have already met 12 or even 15 or even 20! Her timeline with him is completely off! That's why they have to match up…