People should look at the standard before suggesting how to upgrade it.
In the code charts of ISO 10646, the Plane # (and Group #) are explicitly
stated on each page. There is no conceivable benefit to also carrying
4 constant hex digits with each character in the list.
In the text, 10646 will use the methods of identifying characters that are
defined in the standard. Here are four forms that all conform to the
standard: 1234, U+1234, 12345678 U-12345678
Unicode will take to heart Ed Hart's comment (sorry for the pun ;-) to check
that users of -both- standards documents don't have to needlessly navigate
differences in presentation.
Currently, Unicode uses U+1234 throughout the text, and 1234 in the charts.
Unicode 3.0 will not need charts outside plane 0, and we are focussing right
now on getting that version published. It's slightly premature to worry about
the next step now.
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