wM6.1 Threaded SMS: change heading behavior ? grouping ?

[monkeyboy]

From what I can tell, the WM6.1 threaded SMS app (Sprint Touch):
1) groups by sender,
2) uses as a heading the first line of the LAST msg.

Is there a way to change these behaviors ?

Specifically, I would like the app to
1) group a bit more intelligently, guessing at when a conversation with a particular sender is a new one, and therefore start a new grouping (thread). Perhaps time is the best criteria, i.e. if the next msg takes more than, say, 10 minutes to arrive, it is considered a new thread,
2) more importantly, I would like the heading of a thread to be the first line of the FIRST msg, not the last msg.

[monkeyboy]

I guess no one knows about hacking the threaded SMS app...

How about at least changing the sort order WITHIN a thread, from oldest on top, to oldest on bottom ?