For me, the underhyped features are the ones that just fit into the design and the intended use-case. I don't mind deep pocket or tall pocket clips, but I've passed on a couple knives because the rest of the handle didn't fit the clip. That's subjective, I'll admit, but for example, my UKPK sits just flush with my pocket, decent to grab, but out of the way, and it's not something I need fast. My Native salt, Caribbean, or griptillian sit where I don't need to dig all the way into my pocket to get enough of them to get a deployable grip, or if worst was to happen, I can direct someone to grab then, and they don't need to get deep into my pocket to get to it. Lanyard holes, the bugout's hole set up makes sense for the knife as a whole, it's a design flourish, but I can chuck a mini-biner in there if I need to. Given it's overall design and market, that makes sense.
I like my ESEE-3, but with hindsight and more knowledge I know that at the time, I would have actually liked the handle mod version more, but since the wood here is harder than rc57, and my whiteriver backpacker pro is a better steel for my needs, and sits between the 3 and Izula, and my LT Wright next gen is again a better steel, but also a bit better for getting beaten on than the 3, in design. That said, it took learning to get there, and of the four knives in total, I'm not up shit creek if I only had one. Just that with time, I learned that certain things were a bit more or a bit less necessary.
I have a pretty small hand, and so most folders put the stud in the wrong place for me, they put it for where a big guy will find it easy to use a small knife, instead of fitting it to where it matches with the overall size of the knife.