MrBob
Well-known member
This may need to go into the giving filmmakers stupid ideas thread 
With the announcement of Will Poulter as Eustace, we now can get an idea about Jill. She will right now be about 13-years-old. By the time TSC is made, Will, and possibly Jill's actress, will be 15-years-old.
This brings up some potentially problematic issues with their relationship. In the books it was, of course, platonic as they were about 10-years-old. Aging them to 15 means they may want to add a bit of romantic tension between the two. We already know they are perfectly capable of that with Susan/Caspian. Making a teen romance within an adventure story may be just what the screenwriters do to spice the story up.
I would hate to see this friendship turned into anything else. Assuming they do all seven books, by the time they get to TLB, Will and Jill's actress could be about 21-years-old and the implications of their romance from TSC would be too much to think about. They may have them arriving in Narnia a bit upset with each other due to their failing adult relationship.
Some thought the Caspian/Susan kiss was wrong, I think any romantic kiss between Jill and Eustace in TSC would rival that error due to the complications for the future.
MrBob

With the announcement of Will Poulter as Eustace, we now can get an idea about Jill. She will right now be about 13-years-old. By the time TSC is made, Will, and possibly Jill's actress, will be 15-years-old.
This brings up some potentially problematic issues with their relationship. In the books it was, of course, platonic as they were about 10-years-old. Aging them to 15 means they may want to add a bit of romantic tension between the two. We already know they are perfectly capable of that with Susan/Caspian. Making a teen romance within an adventure story may be just what the screenwriters do to spice the story up.
I would hate to see this friendship turned into anything else. Assuming they do all seven books, by the time they get to TLB, Will and Jill's actress could be about 21-years-old and the implications of their romance from TSC would be too much to think about. They may have them arriving in Narnia a bit upset with each other due to their failing adult relationship.
Some thought the Caspian/Susan kiss was wrong, I think any romantic kiss between Jill and Eustace in TSC would rival that error due to the complications for the future.
MrBob