Hiya!
Totally agree with the idea of FAR too many creatures/races having "darkvision".
I like the idea of a simple statement of: "All monsters can see in the dark". That it. No specifics, just "...it's a monster, so it can see in the dark...", which leaves just exactly how, why, when, etc a monster could "see in the dark" up to the DM.
For me, for the last 3'ish decades or so, I've ruled that any "infravision/darkvision/ultravision" is a creatures "backup sense of sight". If a creature has Darkvision
(I'll restrict to 5e), it "kicks in" when there is no other means of light or the other means are EXTREMELY dim. In other words, if a fighter is holding a torch, then the dwarf 40' in front of him can't see anything down the tunnel because the light from the torch IS reaching down the tunnel, it's just very, VERY dim! So, despite the fact that Darkvision would be great, it 'shuts off', for lack of a better description, in favour of the normal torch light.
Effectively, this gives a reason to have a goblin warren dotted with clusters of candles, torches, dull-fat-burning-lamps, etc; it spoils any other creatures Darkvision...putting the Goblins in control of the area because they live there and know all the traps and ambush spots.
Anyway...Darkvision is a bit of a thorn in my side. I'd rather have "Monsters can see in the dark" and leave it at that.
^_^
Paul L. Ming