Ok, on the topic of fat bodies, they should be race-restricted to certain races like Humans, Dwarves, Halflings, and the occasional Half-Orc, while races like Elves, Half-Elves, Tieflings and Githyanki shouldn't have access to this body type, heck even Halsin's body type is already lore breaking for elves anyways.
I think it's fine if you can make your main character a fat elf, since you have the option to not use it if you find it lore/immersion breaking, the problem would be changing 20% of the elfs in the game into that body model. And Halsing well...just ONE elf that breaks the mold is not a big deal for me.