Oh damn now that I remember. Only Captain America and Thor are worth lifting Mjolnir. Kratos should be added to the list cus he will be able to use Mjolnir in the next GOW DUH(he can still use the Leviathan axe which has similar powers and made by the same dwarves). So they don't need to overlook this detail. He needs to use Mjolnir as glider like Thor too.
They need to make Mimir's head as backbling too and Icarus wings as glider since now the glider can be hooked to back exactly like Mave wings glider and they need to make his built-in emote Spartan Rage making all his veins pop out like in the game. A wrap greyish ash wrap called family ashes to remember his dark past which will make all weapons look ashy. A lava or icy contrail (changing styles according to whether he is equipped with the blades of Chaos, so lava/fire or the Leviathan axe so ice).