Kind of don't want that. Out "in the field" there may be (will often be) no WiFi. I want removable storage.
Yeah, but you can use your camera as a storage drive which you access over WiFi.
I very much doubt that'd be "better" in any meaningful way, at least for the use case that a card reader covers. You still want removable storage, it's useful to be able to read that storage without the camera, ...
I prefer physical mediums to sending data over the network. Especially when there are no benefits in doing so.
In what way would WIFI be better? SD cards work and work well.
You still use SD cards. But you access them through WiFI and your camera.