IMO Sun God is already the better variation between it and Blood God, at least in current MKXL meta. Blood God can turtle well and shut down some zoning but obsidian totem can't help you guess right forever. Even with the damage reduction you can just get mixed up, knocked down and then your totem is gone and you're on the floor with no defensive options. Sun God has this problem too but can at least make up for it by having a great offensive game of his own. He's one of the game's best grapplers and is probably super low on Paulo's list of variations that "need help", especially with that negative edge tick grab option select. That shit's dirty.
But I do agree whiffing issues across the board need fixing.