I'd just as soon see them recast Han, Luke, and Leia than see them recast Indiana Jones. I'm fine with different interpretations of a character such as Robin Hood for example, because it is a character who was first created in a non-film media. All film interpretations of such a character are just that: interpretations.

One does not simply re-write the Lord of the Rings or 1984. Abridge them, sure. Translate them, adapt them for television or film, of course. But a reimagining of a property within the same media will not place it on the same level as the original.

When somebody points out that it was done successfully with Star Trek and James Bond, I wonder whether it is done for any reason other than brand recognition. There is no reason why the position of 007 cannot be filled by someone other than James Bond, or having the Enterprise commanded by someone other than James T Kirk. I guess people just like the name 'James' too much to let it go.