Blacksmith looking for chef's advice

I've been making knives for some 2 years now. And i wanted to get some advice from you guys. What are the type of knives you would like to see made more of ?

What i usually do is create a completly custom knife from ground up for a client. But when there isnt an request for one i get quite uncertain about what should i make.

I source my own materials - mostly steels and aloys that are quite rare such as; old soviet tank drill bits, axles from ship engines, chemical grade stainless steel, and whatever else i can get my hands on. But its sad to see this material not being put to good use.