UCP 52 behaviour

Hi list,
I was wondering why kannel does not have a callback mechanism so that 
when an MT
fails and an NACK is returned after the UCP 52, we can directly update 
our DB.
As some operators does not allow notifications (UCP 53), we have to 
grep/perl/sed
our logfiles, which can be heavy and intrinsecly inconsitent. The 
current DLR mechanism
does that very well, so I'm pretty sure the current code base allow to 
add this easily.
We would just have to provide an "mtID" during the call to 
/cgi-bin/sendsms ,
which would be reforwarded to an url defined in the config file, or 
given  as
an urlencoded parameter to sendsms.
Did I miss something? Are there any people who implemented such feature?
Does that feature interrest someone ? If we provide a patch, will it be 
integrated ?

Thank you in advance!

Mat.