Eventually when Malphite gets reworked
I hope his "Unstoppable Force" aspect becomes the center of his kit. This gigantic rock should have a very unique tank feel where his abilities aren't simply stopped by anything. Maybe even give him a new ult and move his current ult to a basic ability, something like they did with Galio. Obviously it would need to be tweaked in a way so that it isn't a completely broken ability, but he just needs something to make him stand out.
His immense weight could break the ground itself, creating fissures.
He could hurl boulders at his enemies that cripple their movement abilities and cannot be stopped from being thrown, but at the same time Malphite also gains a movement penalty while using it and cannot stop using the ability once he starts.
I can imagine he will be needing an update not in season 8 but in season 9 because his kit has just been falling apart with his ult not being as extreme of a game changer anymore.
https://assets.change.org/photos/9/bs/cy/irbsCYNgHdjKxRK-800x450-noPad.jpg?1424626666 https://sketchfab.com/models/a09db5c1c7b944bd8cd803f871657fc1 ^very popular concept that I've seen