actually it shouldn't be a very very hard thing to implement
same way dynamic sigs are made , the update should be possible
i can think of some downsides tho .. what's the char that is to be placed there ? what criteria to select that char? (i'm guessing same as in the profile..)
only thought about this cuz most people play more than 1 char at a time, so even if the highest char is listed there , they may have that one parked and play another one ..you would still need to check that person's full char list to see if they have something in range
but i'll vote yes