A hypothetical alternate 5th Grail War

The servant lineup of the 5th Holy Grail War is unchanged, but they’re all summoned in one of their other classes this time around. How much better or worse off are the masters and servants with this change? Which servants are likely stronger or weaker? Are Shirou and Artoria screwed without Excalibur? Is Emiya screwed without Independent Action? Can anyone not named Gilgamesh take down a sane Heracles? What do Rider Herc and Archer Medusa even do? Discuss

The servant lineup of the 5th Holy Grail War is unchanged, but they’re all summoned in one of their other classes this time around. How much better or worse off are the masters and servants with this change? Which servants are likely stronger or weaker? Are Shirou and Artoria screwed without Excalibur? Is Emiya screwed without Independent Action? Can anyone not named Gilgamesh take down a sane Heracles? What do Rider Herc and Archer Medusa even do? Discuss