Figured I'd finally take a pic of my latest Opinel, gifted to me a few years back.
It illustrates all the mods which are actually needed and I did them in minutes with a coarse file and a piece of sandpaper.
The point on the butt of the knife facing your palm sanded down. I could have done a bit more.
Easy open notch to pinch the blade open.
Sides flattened a bit. I definitely could have done a bit more.
I've read on here that Opinels can be modified perfectly with a brick. I agree.
More wood removal can be fun and rather purty, but it's not necessary.
One reason to do so might be to make the knife smaller for pocket carry.
Jackknife, I am indeed finding that I carry my #8's less than I used to. I have a few. Wish I'd kept all the #6's I'd modded.
Here's a #6 I still have and modded in the last few years. It fits nicely into a watch pocket now, my favorite carry.
I've taken enough wood (and steel) off a #8 to fit them to a watch pocket as well