Yeah I think its wrong to say the offense almost doesn't need to be upgraded. Yes, they can absolutely move the ball and score effectively with this offense, but it puts Fields at much more physical risk and it makes it very hard to come back if you're behind late. This is a very ball control offense, lots of runs, lots of 6+ minute long drives. That's great if you're ahead, its less good if you're behind. I expect for the rest of the season they're gonna continue with some variation of this offense and thats good and appropriate. But a more dynamic offense is possible. One thats more sustainable and maintains Fields' health and doesn't rely entirely on his out-of-this-world athleticism, which wont last forever. If he runs this effectively he's bought himself a few years to fine tweak his passing, which is great.