There are some things that games just don't do for some reason. Stuff that should be obvious and achievable, but simply aren't addressed, be they major mechanics to little touches. What are they for you, Anon? Mine are…
1) Sympathetic Detonation. This is very, very rarely seen. Shoot and explosive barrel, what do you get? A 5'x5'x5' explosion. Shoot a stack of 200 explosive barrels, what do you get? 200 individual 5'x5'x5' explosions. I want to see games tally up simultaneous blasts into one larger effect that is greater than the sum of its parts. It would make environment kill setups way more satisfying and viable in many games. Particularly in genres where you can carry explosives yourself and stack them on top of eachother. You've got 10 bricks of C4. Do you pile them up, or distribute them as traps?
2) Elemental magic is boring as fuck most of the time. I wish devs would spend time studying lightning and fire the same way audio designers go out with recording devices for gun sounds.
Fire is actually one of the most unique elements, but it's usually pidgeonholed down into direct damage and sometimes there's a fire damage-over-time effect. At best you get an explosion and lingering damage fields. What about the fact that it's the only energy that is aggressively contagious and can spread itself? Or the fact that it's a sustaining output of energy over a wide region even outside the actual area of the flames, making an equal amount of fire have a way larger radius of damage than an equal amount of anything else?
I'm sick of "ice" magic. I want cold magic. Ice is optional. I want to freeze someone to the bone, not stab them with giant ice crystals. The fact that cold magic can do that should be a benefit to its versatility, but making it the centerpoint of its design is boring as fuck and reduces the power of frigidity to being about hitting things with physical objects.
Have any of you ever been within 10' of a lightning strike? It's like a goddamn orbital bombardment. All of your senses are scrambled; the sound hits you so hard that your sense of direction momentarily panics, you're disoriented by the flash (or momentarily blind if you were looking right at it), and you can't hear anything over the ringing in your ears for several seconds, which may persist for minutes. And if you're really unlucky, you get the secondary damage AoE because whatever that lighting just hit exploded from instant thermal expansion, creating a flaming debris cloud. AND it can inflict immolation. The noise is so much louder than a gun, I can't even describe. The closest thing I can imagine manmade that imitates it would have to be artillery, maybe. Lightning magic so so damned underwhelming in videogames. My flirtation with instant death by lightning bolt in real life has left me contemptuous of the buzzing cloud-tasers that are lightning spells.