question about sorting, grouping and framecontentrenaming

[aliasname]

A couple of issues I don't get solved after having tried for a while.
1)
is it possible to declare that controlpoints get a differnt name for the word 'date'?
I got 2 date informations, date being used for recording dates, and releaseyear representing the date of the release of an album. I'm in need for both since once I want to get a list of albums as being recorded, the other times I want to know which was the latest release no matter it being a re-issue, remaster or re-press.

2)
at the moment various controlpoints do a fancy sorting of these 2 date fields. One does list the items latest till earlierst and the othe one simply the other way round. Any idea on how to revert the way things get listed?

3)
I'm still in need to use something similar to
@GENRE=Piano
&GENRE=Concerto
=GENRE=Piano concerto
but I don't want to define exact content but wildcards, so that I turn a tagframe containing <item1>; <item2>; <item3>; item4> .... into
<item1>, <item2>, <item3>, <item4> ...
In other words a tagvalue replacement not replacing one tag by another but to read the tag content and replace a given string by another.
Any idea?
All I could think of would be to use a small script reading the original tag and write back another one with the modified information, but this always bears the risk that both get out of sync sooner or later not to mention that this would be as redundant as having 'albumartist' + 'album artist' + 'band/orchestra' all tagged to server differnt programs all relying upon a specific entry.

Perhaps this tagupdate function could get expanded somehow to allow for wildcards?