Unencoded cased scripts and unencoded titlecase letters

[Karl Williamson]

It's my sense that there are very few cased scripts in existence that 
are ever likely to be encoded by Unicode that haven't already been 
so-encoded.

I also suspect that there very few new titlecased letters will ever be 
added to Unicode, as I believe these all come to maintain roundtrip 
compatibility with existing standards, and there just aren't any 
unencoded standards.

Am I right?