I think your shanks look good. I just like a simple plain shank without any turning on it , it has a simple elegance. Its to easy to put to much shape into the shank and make it look cluttered
I also think that a straight shank is safer to use than one that is crooked.
Most stick makers here like the bottom of the shanks to taper down to about 3/4 of the top of the shank .How does yours compare to that?
If you want to develop the shanks there is quite a few optiond open to you.
try embelishing the shanks with some simple wood burning water fowl dogs etc. also it would look good with a celtic pattern on part of the shanks.
Look at local history to see if you can find something that relevant to your area to burn onto the shank.
you could also use a classic handle s , like cardigan sticks, half crooks etc..These always look very good on a good shank. and you will find they look much better visually than a plain cross handle.
There is`nt any carving to them just shaping them , but they always lookl ike a good craftsman has made them.. Other than that you could always turn them of center , or cut a spiral in them. have a look at canesmiths work in the introduction there done to a good standard .
Other options is to stain the wood to get contrasting colours.
You could also laminate different colour woods then turn them , think there are some in someones gallery on this?