My wife says i have a problem, but you to her, would be a sick, sick man :thumbup:
I have removed handles and made them fit better or a previous owner did a crappy job of setting the wedges, which can be a pain to get out. I have also made small pieces to fit down in the eye if there is small void and they hold up good, just set them with some glue, but don't go crazy all over in the eye, You may want to use good judgement, don't want to build a widow maker.
I haven't done this yet, but I am going to take some deer footed handles that have part of the "foot" split off, take a block plane flatten up where the piece is missing, glue on and maybe put a small peg or two in it then after the glue sets take a rasp, belt sander, spoke shave, and sandpaper to shape it down and smooth it up.
Some of these old handles don't look the best but I think they can be spruced up.
Pat