Since the Delica is one of my favorite knives I have only minor suggestions.
#1 Flat Grind blade
#2 Keep the length under 3" with a sturdier point
#3 The to keep the same thickness on the handle but have a less "sharp" feeling texture, ie. smooth out the "volcano" grip a little. Give us a deeper forward finger grip and smooth out the back end.
#4 Make the hole a little bigger like the Salt and move it forward.
#5 Give us lots of colors including clear.
Here is a pic with my ideas.
Rare Spyderco Page